diff --git a/esphome/components/optolink/__init__.py b/esphome/components/optolink/__init__.py
new file mode 100644
index 0000000000..bd409e4a09
--- /dev/null
+++ b/esphome/components/optolink/__init__.py
@@ -0,0 +1,92 @@
+from esphome import pins
+import esphome.codegen as cg
+from esphome.components import text_sensor as ts
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_ID,
+    CONF_LOGGER,
+    CONF_PROTOCOL,
+    CONF_RX_PIN,
+    CONF_STATE,
+    CONF_TX_PIN,
+)
+from esphome.core import CORE
+
+DEPENDENCIES = []
+AUTO_LOAD = ["sensor", "binary_sensor", "text_sensor", "number", "select", "switch"]
+MULTI_CONF = False
+CONF_DEVICE_INFO = "device_info"
+
+optolink_ns = cg.esphome_ns.namespace("optolink")
+OptolinkComponent = optolink_ns.class_("Optolink", cg.Component)
+StateSensor = optolink_ns.class_(
+    "OptolinkStateSensor", ts.TextSensor, cg.PollingComponent
+)
+STATE_SENSOR_ID = "state_sensor_id"
+DeviceInfoSensor = optolink_ns.class_(
+    "OptolinkDeviceInfoSensor", ts.TextSensor, cg.PollingComponent
+)
+DEVICE_INFO_SENSOR_ID = "device_info_sensor_id"
+CONFIG_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(): cv.declare_id(OptolinkComponent),
+        cv.GenerateID(STATE_SENSOR_ID): cv.declare_id(StateSensor),
+        cv.GenerateID(DEVICE_INFO_SENSOR_ID): cv.declare_id(DeviceInfoSensor),
+        cv.Required(CONF_PROTOCOL): cv.one_of("P300", "KW"),
+        cv.Optional(CONF_LOGGER, default=False): cv.boolean,
+        cv.Optional(CONF_STATE): cv.string,
+        cv.Optional(CONF_DEVICE_INFO): cv.string,
+    }
+).extend(cv.COMPONENT_SCHEMA)
+if CORE.is_esp32:
+    CONFIG_SCHEMA = CONFIG_SCHEMA.extend(
+        cv.Schema(
+            {
+                cv.Required(CONF_RX_PIN): pins.internal_gpio_input_pin_schema,
+                cv.Required(CONF_TX_PIN): pins.internal_gpio_output_pin_schema,
+            }
+        )
+    )
+
+
+async def to_code(config):
+    cg.add_library("VitoWiFi", "1.0.2")
+
+    cg.add_define(
+        "VITOWIFI_PROTOCOL", cg.RawExpression(f"Optolink{config[CONF_PROTOCOL]}")
+    )
+
+    var = cg.new_Pvariable(config[CONF_ID])
+    cg.add(var.set_logger_enabled(config[CONF_LOGGER]))
+
+    if CONF_STATE in config:
+        debugSensor = cg.new_Pvariable(config[STATE_SENSOR_ID], config[CONF_STATE], var)
+        await ts.register_text_sensor(
+            debugSensor,
+            {
+                "id": config[STATE_SENSOR_ID],
+                "name": config[CONF_STATE],
+                "disabled_by_default": "false",
+            },
+        )
+        await cg.register_component(debugSensor, config)
+
+    if CONF_DEVICE_INFO in config:
+        debugSensor = cg.new_Pvariable(
+            config[DEVICE_INFO_SENSOR_ID], config[CONF_DEVICE_INFO], var
+        )
+        await ts.register_text_sensor(
+            debugSensor,
+            {
+                "id": config[DEVICE_INFO_SENSOR_ID],
+                "name": config[CONF_DEVICE_INFO],
+                "disabled_by_default": "false",
+            },
+        )
+        await cg.register_component(debugSensor, config)
+
+    if CORE.is_esp32:
+        cg.add(var.set_rx_pin(config[CONF_RX_PIN]["number"]))
+        cg.add(var.set_tx_pin(config[CONF_TX_PIN]["number"]))
+
+    await cg.register_component(var, config)
diff --git a/esphome/components/optolink/binary_sensor.py b/esphome/components/optolink/binary_sensor.py
new file mode 100644
index 0000000000..57f51f2c3e
--- /dev/null
+++ b/esphome/components/optolink/binary_sensor.py
@@ -0,0 +1,31 @@
+from esphome import core
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import binary_sensor
+from esphome.const import CONF_ID, CONF_ADDRESS, CONF_UPDATE_INTERVAL
+from . import optolink_ns, OptolinkComponent
+
+OptolinkBinarySensor = optolink_ns.class_(
+    "OptolinkBinarySensor", binary_sensor.BinarySensor, cg.PollingComponent
+)
+CONF_OPTOLINK_ID = "optolink_id"
+CONFIG_SCHEMA = binary_sensor.binary_sensor_schema(OptolinkBinarySensor).extend(
+    {
+        cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+        cv.Required(CONF_ADDRESS): cv.hex_uint32_t,
+        cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+            cv.positive_time_period_milliseconds,
+            cv.Range(min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)),
+        ),
+    }
+)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await binary_sensor.register_binary_sensor(var, config)
+
+    cg.add(var.set_address(config[CONF_ADDRESS]))
diff --git a/esphome/components/optolink/number.py b/esphome/components/optolink/number.py
new file mode 100644
index 0000000000..2de32e186a
--- /dev/null
+++ b/esphome/components/optolink/number.py
@@ -0,0 +1,59 @@
+from esphome import core
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import number
+from esphome.components.optolink.sensor import SENSOR_BASE_SCHEMA
+from esphome.const import (
+    CONF_ADDRESS,
+    CONF_BYTES,
+    CONF_DIV_RATIO,
+    CONF_ID,
+    CONF_MAX_VALUE,
+    CONF_MIN_VALUE,
+    CONF_STEP,
+    CONF_UPDATE_INTERVAL,
+)
+from . import OptolinkComponent, optolink_ns
+
+OptolinkNumber = optolink_ns.class_(
+    "OptolinkNumber", number.Number, cg.PollingComponent
+)
+
+CONF_OPTOLINK_ID = "optolink_id"
+CONFIG_SCHEMA = (
+    number.NUMBER_SCHEMA.extend(
+        {
+            cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+            cv.GenerateID(): cv.declare_id(OptolinkNumber),
+            cv.Required(CONF_MAX_VALUE): cv.float_,
+            cv.Required(CONF_MIN_VALUE): cv.float_range(min=0.0),
+            cv.Required(CONF_STEP): cv.float_,
+            cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+                cv.positive_time_period_milliseconds,
+                cv.Range(
+                    min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)
+                ),
+            ),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .extend(SENSOR_BASE_SCHEMA)
+)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await number.register_number(
+        var,
+        config,
+        min_value=config[CONF_MIN_VALUE],
+        max_value=config[CONF_MAX_VALUE],
+        step=config[CONF_STEP],
+    )
+
+    cg.add(var.set_address(config[CONF_ADDRESS]))
+    cg.add(var.set_bytes(config[CONF_BYTES]))
+    cg.add(var.set_div_ratio(config[CONF_DIV_RATIO]))
diff --git a/esphome/components/optolink/optolink.cpp b/esphome/components/optolink/optolink.cpp
new file mode 100644
index 0000000000..3fbad9732d
--- /dev/null
+++ b/esphome/components/optolink/optolink.cpp
@@ -0,0 +1,72 @@
+#include "esphome/core/defines.h"
+#include "esphome/components/optolink/optolink.h"
+#include <VitoWiFi.h>
+
+VitoWiFiClass<VITOWIFI_PROTOCOL> VitoWiFi;
+
+namespace esphome {
+namespace optolink {
+
+void Optolink::_comm() {
+  ESP_LOGD("Optolink", "enter _comm");
+  VitoWiFi.readAll();
+  ESP_LOGD("Optolink", "exit _comm");
+}
+
+void Optolink::setup() {
+  ESP_LOGI("Optolink", "setup");
+
+  if (logger_enabled_) {
+    VitoWiFi.setLogger(this);
+    VitoWiFi.enableLogger();
+  }
+
+#if defined(USE_ESP32)
+  VitoWiFi.setup(&Serial, rx_pin_, tx_pin_);
+#elif defined(USE_ESP8266)
+  VitoWiFi.setup(&Serial);
+#endif
+
+  // set_interval("Optolink_comm", 10000, std::bind(&Optolink::_comm, this));
+}
+
+void Optolink::loop() { VitoWiFi.loop(); }
+
+void Optolink::set_error(const std::string &format, ...) {
+  va_list args;
+  va_start(args, format);
+  char buffer[128];
+  size_t n = std::vsnprintf(buffer, sizeof(buffer), format.c_str(), args);
+  va_end(args);
+
+  error_ = buffer;
+}
+
+void Optolink::read_value(IDatapoint *datapoint) {
+  if (datapoint != nullptr) {
+    ESP_LOGI("Optolink", " read value of datapoint %s", datapoint->getName());
+    VitoWiFi.readDatapoint(*datapoint);
+  }
+}
+
+void Optolink::write_value(IDatapoint *datapoint, DPValue dpValue) {
+  if (datapoint != nullptr) {
+    char buffer[64];
+    dpValue.getString(buffer, sizeof(buffer));
+    ESP_LOGI("Optolink", " write value %s of datapoint %s", buffer, datapoint->getName());
+    VitoWiFi.writeDatapoint(*datapoint, dpValue);
+  }
+}
+
+size_t Optolink::write(uint8_t ch) {
+  if (ch == '\n') {
+    ESP_LOGD("VitoWifi", "%s", log_buffer_.c_str());
+    log_buffer_.clear();
+  } else {
+    log_buffer_.push_back(ch);
+  }
+  return 1;
+}
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink.h b/esphome/components/optolink/optolink.h
new file mode 100755
index 0000000000..3e64c62de4
--- /dev/null
+++ b/esphome/components/optolink/optolink.h
@@ -0,0 +1,49 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+#include "esphome/components/binary_sensor/binary_sensor.h"
+#include "esphome/components/text_sensor/text_sensor.h"
+#include <VitoWiFi.h>
+
+using namespace esphome;
+using namespace sensor;
+using namespace binary_sensor;
+using namespace text_sensor;
+
+namespace esphome {
+namespace optolink {
+
+// '00' ='WW' '01' ='RED' '02' ='NORM' '03' ='H+WW' '04' ='H+WW FS' '05' ='ABSCHALT'
+
+//=====================================================================================================================
+class Optolink : public esphome::Component, public Print {
+ protected:
+  std::string error_ = "OK";
+  std::string log_buffer_;
+  bool logger_enabled_ = false;
+  int rx_pin_;
+  int tx_pin_;
+
+  void _comm();
+
+ public:
+  void setup() override;
+
+  void loop() override;
+
+  size_t write(uint8_t ch) override;
+
+  void set_logger_enabled(bool logger_enabled) { logger_enabled_ = logger_enabled; }
+  void set_rx_pin(int rx_pin) { rx_pin_ = rx_pin; }
+  void set_tx_pin(int tx_pin) { tx_pin_ = tx_pin; }
+
+  void write_value(IDatapoint *datapoint, DPValue dpValue);
+  void read_value(IDatapoint *datapoint);
+
+  void set_error(const std::string &format, ...);
+  std::string get_error() { return error_; }
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_binary_sensor.h b/esphome/components/optolink/optolink_binary_sensor.h
new file mode 100644
index 0000000000..22d8dd5878
--- /dev/null
+++ b/esphome/components/optolink/optolink_binary_sensor.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "esphome/components/binary_sensor/binary_sensor.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkBinarySensor : public OptolinkSensorBase,
+                             public esphome::binary_sensor::BinarySensor,
+                             public esphome::PollingComponent {
+ public:
+  OptolinkBinarySensor(Optolink *optolink) : OptolinkSensorBase(optolink) {
+    bytes_ = 1;
+    div_ratio_ = 1;
+  }
+
+ protected:
+  void setup() override { setup_datapoint(); }
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override { publish_state(state); };
+};
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_device_info_sensor.h b/esphome/components/optolink/optolink_device_info_sensor.h
new file mode 100644
index 0000000000..7611459807
--- /dev/null
+++ b/esphome/components/optolink/optolink_device_info_sensor.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#include "esphome/components/text_sensor/text_sensor.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkDeviceInfoSensor : public esphome::text_sensor::TextSensor, public esphome::PollingComponent {
+ public:
+  OptolinkDeviceInfoSensor(std::string name, Optolink *optolink) {
+    optolink_ = optolink;
+    set_name(name);
+    set_update_interval(1800000);
+    set_entity_category(esphome::ENTITY_CATEGORY_DIAGNOSTIC);
+  }
+
+ protected:
+  void setup() override {
+    datapoint_ = new Datapoint<conv4_1_UL>(get_name().c_str(), "optolink", 0x00f8, false);
+    datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+      uint32_t value = dpValue.getU32();
+      ESP_LOGD("OptolinkTextSensor", "Datapoint %s - %s: %d", dp.getGroup(), dp.getName(), value);
+      uint8_t *bytes = (uint8_t *) &value;
+      uint16_t tmp = esphome::byteswap(*((uint16_t *) bytes));
+      std::string geraetekennung = esphome::format_hex_pretty(&tmp, 1);
+      std::string hardware_revision = esphome::format_hex_pretty((uint8_t *) bytes + 2, 1);
+      std::string software_index = esphome::format_hex_pretty((uint8_t *) bytes + 3, 1);
+      publish_state("Device ID: " + geraetekennung + "|Hardware Revision: " + hardware_revision +
+                    "|Software Index: " + software_index);
+    });
+  }
+  void update() override { optolink_->read_value(datapoint_); }
+
+ private:
+  Optolink *optolink_;
+  IDatapoint *datapoint_;
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_number.cpp b/esphome/components/optolink/optolink_number.cpp
new file mode 100644
index 0000000000..1032645009
--- /dev/null
+++ b/esphome/components/optolink/optolink_number.cpp
@@ -0,0 +1,20 @@
+#include "optolink_number.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+void OptolinkNumber::control(float value) {
+  if (value > traits.get_max_value() || value < traits.get_min_value()) {
+    optolink_->set_error("datapoint value of number %s not in allowed range", get_sensor_name().c_str());
+    ESP_LOGE("OptolinkNumber", "datapoint value of number %s not in allowed range", get_sensor_name().c_str());
+  } else {
+    ESP_LOGI("OptolinkNumber", "control of number %s to value %f", get_sensor_name().c_str(), value);
+    update_datapoint(value);
+    publish_state(value);
+  }
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_number.h b/esphome/components/optolink/optolink_number.h
new file mode 100644
index 0000000000..2cc73a46db
--- /dev/null
+++ b/esphome/components/optolink/optolink_number.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#include "esphome/components/number/number.h"
+#include "optolink_sensor_base.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkNumber : public OptolinkSensorBase, public esphome::number::Number, public esphome::PollingComponent {
+ public:
+  OptolinkNumber(Optolink *optolink) : OptolinkSensorBase(optolink, true) {}
+
+ protected:
+  void setup() override { setup_datapoint(); }
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override { publish_state(state); };
+
+  void control(float value) override;
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_select.cpp b/esphome/components/optolink/optolink_select.cpp
new file mode 100644
index 0000000000..f7c53077f6
--- /dev/null
+++ b/esphome/components/optolink/optolink_select.cpp
@@ -0,0 +1,41 @@
+#include "optolink_select.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+void OptolinkSelect::control(const std::string &value) {
+  for (auto it = mapping_->begin(); it != mapping_->end(); ++it) {
+    if (it->second == value) {
+      ESP_LOGI("OptolinkSelect", "control of select %s to value %s", get_sensor_name().c_str(), it->first.c_str());
+      update_datapoint(std::stof(it->first));
+      publish_state(it->second);
+      break;
+    }
+    if (it == mapping_->end()) {
+      optolink_->set_error("unknown value %s of select %s", value.c_str(), get_sensor_name().c_str());
+      ESP_LOGE("OptolinkSelect", "unknown value %s of select %s", value.c_str(), get_sensor_name().c_str());
+    }
+  }
+};
+
+void OptolinkSelect::value_changed(float state) {
+  std::string key;
+  if (div_ratio_ == 1) {
+    key = std::to_string((int) state);
+  } else {
+    key = std::to_string(state);
+  }
+  auto pos = mapping_->find(key);
+  if (pos == mapping_->end()) {
+    optolink_->set_error("value %s not found in select %s", key.c_str(), get_sensor_name().c_str());
+    ESP_LOGE("OptolinkSelect", "value %s not found in select %s", key.c_str(), get_sensor_name().c_str());
+  } else {
+    publish_state(pos->second);
+  }
+  //-----------------------------------------------publish_state(state);
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_select.h b/esphome/components/optolink/optolink_select.h
new file mode 100644
index 0000000000..63b379c1e5
--- /dev/null
+++ b/esphome/components/optolink/optolink_select.h
@@ -0,0 +1,39 @@
+#pragma once
+
+#include <map>
+#include "esphome/components/select/select.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkSelect : public OptolinkSensorBase, public esphome::select::Select, public esphome::PollingComponent {
+ public:
+  OptolinkSelect(Optolink *optolink) : OptolinkSensorBase(optolink, true) {}
+
+  void set_map(std::map<std::string, std::string> *mapping) {
+    mapping_ = mapping;
+    std::vector<std::string> values;
+    for (auto it = mapping->begin(); it != mapping->end(); ++it) {
+      values.push_back(it->second);
+    }
+    traits.set_options(values);
+  };
+
+ protected:
+  void setup() override { setup_datapoint(); }
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override;
+
+  void control(const std::string &value) override;
+
+ private:
+  std::map<std::string, std::string> *mapping_ = nullptr;
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_sensor.h b/esphome/components/optolink/optolink_sensor.h
new file mode 100644
index 0000000000..b8613fc470
--- /dev/null
+++ b/esphome/components/optolink/optolink_sensor.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "esphome/components/sensor/sensor.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkSensor : public OptolinkSensorBase, public esphome::sensor::Sensor, public esphome::PollingComponent {
+ public:
+  OptolinkSensor(Optolink *optolink) : OptolinkSensorBase(optolink) {
+    set_state_class(esphome::sensor::STATE_CLASS_MEASUREMENT);
+  }
+
+ protected:
+  void setup() { setup_datapoint(); }
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override { publish_state(state); };
+};
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_sensor_base.cpp b/esphome/components/optolink/optolink_sensor_base.cpp
new file mode 100644
index 0000000000..599f4b791d
--- /dev/null
+++ b/esphome/components/optolink/optolink_sensor_base.cpp
@@ -0,0 +1,163 @@
+#include "optolink_sensor_base.h"
+#include "optolink.h"
+
+namespace esphome {
+namespace optolink {
+
+void OptolinkSensorBase::update_datapoint(float value) {
+  if (!writeable_) {
+    optolink_->set_error("try to control not writable number %s", get_sensor_name().c_str());
+    ESP_LOGE("OptolinkSensorBase", "try to control not writable number %s", get_sensor_name().c_str());
+  } else if (datapoint_ != nullptr) {
+    switch (bytes_) {
+      case 1:
+        switch (div_ratio_) {
+          case 1:
+            optolink_->write_value(datapoint_, DPValue((uint8_t) value));
+            break;
+          case 10:
+            optolink_->write_value(datapoint_, DPValue((float) value));
+            break;
+          default:
+            optolink_->set_error("Unknown byte/div_ratio combination for number %s", get_sensor_name().c_str());
+            ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for number %s",
+                     get_sensor_name().c_str());
+            break;
+        }
+        break;
+      case 2:
+        switch (div_ratio_) {
+          case 1:
+            optolink_->write_value(datapoint_, DPValue((uint16_t) value));
+            break;
+          case 10:
+            optolink_->write_value(datapoint_, DPValue((float) value));
+            break;
+          case 100:
+            optolink_->write_value(datapoint_, DPValue((float) value));
+            break;
+          default:
+            optolink_->set_error("Unknown byte/div_ratio combination for number %s", get_sensor_name().c_str());
+            ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for number %s",
+                     get_sensor_name().c_str());
+            break;
+        }
+        break;
+      case 4:
+        switch (div_ratio_) {
+          case 1:
+            optolink_->write_value(datapoint_, DPValue((uint32_t) value));
+            break;
+          case 3600:
+            optolink_->write_value(datapoint_, DPValue((float) value));
+            break;
+          default:
+            optolink_->set_error("Unknown byte/div_ratio combination for number %s", get_sensor_name().c_str());
+            ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for number %s",
+                     get_sensor_name().c_str());
+            break;
+        }
+        break;
+      default:
+        optolink_->set_error("Unknown byte value for number %s", get_sensor_name().c_str());
+        ESP_LOGE("OptolinkSensorBase", "Unknown byte value for number %s", get_sensor_name().c_str());
+        break;
+    }
+  }
+}
+
+void OptolinkSensorBase::setup_datapoint() {
+  switch (bytes_) {
+    case 1:
+      switch (div_ratio_) {
+        case 1:
+          datapoint_ = new Datapoint<conv1_1_US>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %d", dp.getGroup(), dp.getName(), dpValue.getU8());
+            value_changed(dpValue.getU8());
+          });
+          break;
+        case 10:
+          datapoint_ = new Datapoint<conv1_10_F>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %f", dp.getGroup(), dp.getName(), dpValue.getFloat());
+            value_changed(dpValue.getFloat());
+          });
+          break;
+        default:
+          optolink_->set_error("Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          break;
+      }
+      break;
+    case 2:
+      switch (div_ratio_) {
+        case 1:
+          datapoint_ = new Datapoint<conv2_1_US>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %d", dp.getGroup(), dp.getName(), dpValue.getU16());
+            value_changed(dpValue.getU16());
+          });
+          break;
+        case 10:
+          datapoint_ = new Datapoint<conv2_10_F>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %f", dp.getGroup(), dp.getName(), dpValue.getFloat());
+            value_changed(dpValue.getFloat());
+          });
+          break;
+        case 100:
+          datapoint_ = new Datapoint<conv2_100_F>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %f", dp.getGroup(), dp.getName(), dpValue.getFloat());
+            value_changed(dpValue.getFloat());
+          });
+          break;
+        default:
+          optolink_->set_error("Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          break;
+      }
+      break;
+    case 4:
+      switch (div_ratio_) {
+        case 1:
+          datapoint_ = new Datapoint<conv4_1_UL>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %d", dp.getGroup(), dp.getName(), dpValue.getU32());
+            value_changed(dpValue.getU32());
+          });
+          break;
+        case 3600:
+          datapoint_ = new Datapoint<conv4_3600_F>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+          datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+            ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: %f", dp.getGroup(), dp.getName(), dpValue.getFloat());
+            value_changed(dpValue.getFloat());
+          });
+          break;
+        default:
+          optolink_->set_error("Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          ESP_LOGE("OptolinkSensorBase", "Unknown byte/div_ratio combination for sensor %s", get_sensor_name().c_str());
+          break;
+      }
+      break;
+    default:
+      optolink_->set_error("Unknown byte value for sensor %s", get_sensor_name().c_str());
+      ESP_LOGE("OptolinkSensorBase", "Unknown byte value for sensor %s", get_sensor_name().c_str());
+      break;
+  }
+}
+
+void conv2_100_F::encode(uint8_t *out, DPValue in) {
+  int16_t tmp = floor((in.getFloat() * 100) + 0.5);
+  out[1] = tmp >> 8;
+  out[0] = tmp & 0xFF;
+}
+DPValue conv2_100_F::decode(const uint8_t *in) {
+  int16_t tmp = in[1] << 8 | in[0];
+  DPValue out(tmp / 100.0f);
+  return out;
+}
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_sensor_base.h b/esphome/components/optolink/optolink_sensor_base.h
new file mode 100644
index 0000000000..93074ea2f2
--- /dev/null
+++ b/esphome/components/optolink/optolink_sensor_base.h
@@ -0,0 +1,47 @@
+
+#pragma once
+
+#include "esphome/core/log.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class Optolink;
+
+class OptolinkSensorBase {
+ protected:
+  Optolink *optolink_;
+  bool writeable_;
+  IDatapoint *datapoint_ = nullptr;
+  uint32_t address_;
+  int bytes_;
+  int div_ratio_ = 1;
+
+  void setup_datapoint();
+  void update_datapoint(float value);
+
+ public:
+  OptolinkSensorBase(Optolink *optolink, bool writeable = false) {
+    optolink_ = optolink;
+    writeable_ = writeable;
+  }
+
+  void set_address(uint32_t address) { address_ = address; }
+  void set_bytes(int bytes) { bytes_ = bytes; }
+  void set_div_ratio(int div_ratio) { div_ratio_ = div_ratio; }
+
+ protected:
+  virtual const std::string &get_sensor_name() = 0;
+  virtual void value_changed(float state) = 0;
+};
+
+class conv2_100_F : public DPType {
+ public:
+  void encode(uint8_t *out, DPValue in);
+  DPValue decode(const uint8_t *in);
+  const size_t getLength() const { return 2; }
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_state_sensor.h b/esphome/components/optolink/optolink_state_sensor.h
new file mode 100644
index 0000000000..78d99ac19d
--- /dev/null
+++ b/esphome/components/optolink/optolink_state_sensor.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include "esphome/components/text_sensor/text_sensor.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkStateSensor : public esphome::text_sensor::TextSensor, public esphome::PollingComponent {
+ public:
+  OptolinkStateSensor(std::string name, Optolink *optolink) {
+    optolink_ = optolink;
+    set_name(name);
+    set_update_interval(1000);
+    set_entity_category(esphome::ENTITY_CATEGORY_DIAGNOSTIC);
+  }
+
+ protected:
+  void setup() override{};
+  void update() override { publish_state(optolink_->get_error()); }
+
+ private:
+  Optolink *optolink_;
+};
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_switch.cpp b/esphome/components/optolink/optolink_switch.cpp
new file mode 100644
index 0000000000..226dd3d484
--- /dev/null
+++ b/esphome/components/optolink/optolink_switch.cpp
@@ -0,0 +1,20 @@
+#include "optolink_switch.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+void OptolinkSwitch::write_state(bool value) {
+  if (value != 0 && value != 1) {
+    optolink_->set_error("datapoint value of switch %s not 0 or 1", get_sensor_name().c_str());
+    ESP_LOGE("OptolinkSwitch", "datapoint value of switch %s not 0 or 1", get_sensor_name().c_str());
+  } else {
+    ESP_LOGI("OptolinkSwitch", "control of switch %s to value %d", get_sensor_name().c_str(), value);
+    update_datapoint(value);
+    publish_state(value);
+  }
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_switch.h b/esphome/components/optolink/optolink_switch.h
new file mode 100644
index 0000000000..faf283dacf
--- /dev/null
+++ b/esphome/components/optolink/optolink_switch.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include "esphome/components/switch/switch.h"
+#include "optolink_sensor_base.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkSwitch : public OptolinkSensorBase, public esphome::switch_::Switch, public esphome::PollingComponent {
+ public:
+  OptolinkSwitch(Optolink *optolink) : OptolinkSensorBase(optolink, true) {
+    bytes_ = 1;
+    div_ratio_ = 1;
+  }
+
+ protected:
+  void setup() override { setup_datapoint(); }
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override { publish_state(state); };
+
+  void write_state(bool state) override;
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_text_sensor.cpp b/esphome/components/optolink/optolink_text_sensor.cpp
new file mode 100644
index 0000000000..f226f4f5d0
--- /dev/null
+++ b/esphome/components/optolink/optolink_text_sensor.cpp
@@ -0,0 +1,25 @@
+#include "optolink_text_sensor.h"
+#include "optolink.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+void OptolinkTextSensor::setup() {
+  if (!raw_) {
+    setup_datapoint();
+  } else {
+    datapoint_ = new Datapoint<convRaw>(get_sensor_name().c_str(), "optolink", address_, writeable_);
+    datapoint_->setLength(bytes_);
+    datapoint_->setCallback([this](const IDatapoint &dp, DPValue dpValue) {
+      ESP_LOGD("OptolinkSensorBase", "Datapoint %s - %s: <raw>", dp.getGroup(), dp.getName());
+      uint8_t buffer[bytes_ + 1];
+      dpValue.getRaw(buffer);
+      buffer[bytes_] = 0x0;
+      publish_state((char *) buffer);
+    });
+  }
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/optolink_text_sensor.h b/esphome/components/optolink/optolink_text_sensor.h
new file mode 100644
index 0000000000..bb181c3965
--- /dev/null
+++ b/esphome/components/optolink/optolink_text_sensor.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "esphome/components/text_sensor/text_sensor.h"
+#include "optolink.h"
+#include "optolink_sensor_base.h"
+#include <VitoWiFi.h>
+
+namespace esphome {
+namespace optolink {
+
+class OptolinkTextSensor : public OptolinkSensorBase,
+                           public esphome::text_sensor::TextSensor,
+                           public esphome::PollingComponent {
+ public:
+  OptolinkTextSensor(Optolink *optolink) : OptolinkSensorBase(optolink) {}
+
+  void set_raw(bool raw) { raw_ = raw; }
+
+ protected:
+  void setup() override;
+  void update() override { optolink_->read_value(datapoint_); }
+
+  const std::string &get_sensor_name() override { return get_name(); }
+  void value_changed(float state) override { publish_state(std::to_string(state)); };
+
+ private:
+  bool raw_ = false;
+};
+
+}  // namespace optolink
+}  // namespace esphome
diff --git a/esphome/components/optolink/select.py b/esphome/components/optolink/select.py
new file mode 100644
index 0000000000..34c3482206
--- /dev/null
+++ b/esphome/components/optolink/select.py
@@ -0,0 +1,80 @@
+from esphome import core
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import select
+from esphome.components.optolink.sensor import SENSOR_BASE_SCHEMA
+from esphome.const import (
+    CONF_ADDRESS,
+    CONF_BYTES,
+    CONF_DIV_RATIO,
+    CONF_FROM,
+    CONF_ID,
+    CONF_TO,
+    CONF_UPDATE_INTERVAL,
+)
+from . import OptolinkComponent, optolink_ns
+
+OptolinkSelect = optolink_ns.class_(
+    "OptolinkSelect", select.Select, cg.PollingComponent
+)
+
+
+def validate_mapping(value):
+    if not isinstance(value, dict):
+        value = cv.string(value)
+        if "->" not in value:
+            raise cv.Invalid("Mapping must contain '->'")
+        a, b = value.split("->", 1)
+        value = {CONF_FROM: a.strip(), CONF_TO: b.strip()}
+
+    return cv.Schema(
+        {cv.Required(CONF_FROM): cv.string, cv.Required(CONF_TO): cv.string}
+    )(value)
+
+
+CONF_OPTOLINK_ID = "optolink_id"
+CONF_MAP = "map"
+MAP_ID = "mappings"
+CONFIG_SCHEMA = (
+    select.SELECT_SCHEMA.extend(
+        {
+            cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+            cv.GenerateID(): cv.declare_id(OptolinkSelect),
+            cv.GenerateID(MAP_ID): cv.declare_id(
+                cg.std_ns.class_("map").template(cg.std_string, cg.std_string)
+            ),
+            cv.Required(CONF_MAP): cv.ensure_list(validate_mapping),
+            cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+                cv.positive_time_period_milliseconds,
+                cv.Range(
+                    min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)
+                ),
+            ),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
+    .extend(SENSOR_BASE_SCHEMA)
+)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await select.register_select(
+        var,
+        config,
+        options=[],
+    )
+
+    map_type_ = cg.std_ns.class_("map").template(cg.std_string, cg.std_string)
+    map_var = cg.new_Pvariable(
+        config[MAP_ID],
+        map_type_([(item[CONF_FROM], item[CONF_TO]) for item in config[CONF_MAP]]),
+    )
+
+    cg.add(var.set_map(map_var))
+    cg.add(var.set_address(config[CONF_ADDRESS]))
+    cg.add(var.set_bytes(config[CONF_BYTES]))
+    cg.add(var.set_div_ratio(config[CONF_DIV_RATIO]))
diff --git a/esphome/components/optolink/sensor.py b/esphome/components/optolink/sensor.py
new file mode 100644
index 0000000000..4991ac110d
--- /dev/null
+++ b/esphome/components/optolink/sensor.py
@@ -0,0 +1,51 @@
+from esphome import core
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import sensor
+from esphome.const import (
+    CONF_ID,
+    CONF_ADDRESS,
+    CONF_BYTES,
+    CONF_DIV_RATIO,
+    CONF_UPDATE_INTERVAL,
+)
+from . import optolink_ns, OptolinkComponent
+
+OptolinkSensor = optolink_ns.class_(
+    "OptolinkSensor", sensor.Sensor, cg.PollingComponent
+)
+CONF_OPTOLINK_ID = "optolink_id"
+SENSOR_BASE_SCHEMA = cv.Schema(
+    {
+        cv.Required(CONF_ADDRESS): cv.hex_uint32_t,
+        cv.Required(CONF_BYTES): cv.one_of(1, 2, 4, int=True),
+        cv.Optional(CONF_DIV_RATIO, default=1): cv.one_of(1, 10, 100, 3600, int=True),
+    }
+)
+CONFIG_SCHEMA = (
+    sensor.sensor_schema(OptolinkSensor)
+    .extend(
+        {
+            cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+            cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+                cv.positive_time_period_milliseconds,
+                cv.Range(
+                    min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)
+                ),
+            ),
+        }
+    )
+    .extend(SENSOR_BASE_SCHEMA)
+)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await sensor.register_sensor(var, config)
+
+    cg.add(var.set_address(config[CONF_ADDRESS]))
+    cg.add(var.set_bytes(config[CONF_BYTES]))
+    cg.add(var.set_div_ratio(config[CONF_DIV_RATIO]))
diff --git a/esphome/components/optolink/switch.py b/esphome/components/optolink/switch.py
new file mode 100644
index 0000000000..32540cdf0f
--- /dev/null
+++ b/esphome/components/optolink/switch.py
@@ -0,0 +1,33 @@
+from esphome import core
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import switch
+from esphome.const import CONF_ADDRESS, CONF_ID, CONF_UPDATE_INTERVAL
+from . import OptolinkComponent, optolink_ns
+
+OptolinkSwitch = optolink_ns.class_(
+    "OptolinkSwitch", switch.Switch, cg.PollingComponent
+)
+
+CONF_OPTOLINK_ID = "optolink_id"
+CONFIG_SCHEMA = switch.SWITCH_SCHEMA.extend(
+    {
+        cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+        cv.GenerateID(): cv.declare_id(OptolinkSwitch),
+        cv.Required(CONF_ADDRESS): cv.hex_uint32_t,
+        cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+            cv.positive_time_period_milliseconds,
+            cv.Range(min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)),
+        ),
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await switch.register_switch(var, config)
+
+    cg.add(var.set_address(config[CONF_ADDRESS]))
diff --git a/esphome/components/optolink/text_sensor.py b/esphome/components/optolink/text_sensor.py
new file mode 100644
index 0000000000..662474236e
--- /dev/null
+++ b/esphome/components/optolink/text_sensor.py
@@ -0,0 +1,50 @@
+from esphome import core
+import esphome.codegen as cg
+from esphome.components.optolink.sensor import SENSOR_BASE_SCHEMA
+import esphome.config_validation as cv
+from esphome.components import text_sensor
+from esphome.const import (
+    CONF_ADDRESS,
+    CONF_BYTES,
+    CONF_DIV_RATIO,
+    CONF_ID,
+    CONF_RAW,
+    CONF_UPDATE_INTERVAL,
+)
+from . import optolink_ns, OptolinkComponent
+
+OptolinkTextSensor = optolink_ns.class_(
+    "OptolinkTextSensor", text_sensor.TextSensor, cg.PollingComponent
+)
+
+CONF_OPTOLINK_ID = "optolink_id"
+CONFIG_SCHEMA = cv.All(
+    text_sensor.text_sensor_schema(OptolinkTextSensor)
+    .extend(
+        {
+            cv.GenerateID(CONF_OPTOLINK_ID): cv.use_id(OptolinkComponent),
+            cv.Optional(CONF_UPDATE_INTERVAL, default="10s"): cv.All(
+                cv.positive_time_period_milliseconds,
+                cv.Range(
+                    min=core.TimePeriod(seconds=1), max=core.TimePeriod(seconds=1800)
+                ),
+            ),
+            cv.Optional(CONF_RAW, default=False): cv.boolean,
+        }
+    )
+    .extend(SENSOR_BASE_SCHEMA)
+    .extend({cv.Required(CONF_BYTES): cv.int_}),
+)
+
+
+async def to_code(config):
+    component = await cg.get_variable(config[CONF_OPTOLINK_ID])
+    var = cg.new_Pvariable(config[CONF_ID], component)
+
+    await cg.register_component(var, config)
+    await text_sensor.register_text_sensor(var, config)
+
+    cg.add(var.set_raw(config[CONF_RAW]))
+    cg.add(var.set_address(config[CONF_ADDRESS]))
+    cg.add(var.set_bytes(config[CONF_BYTES]))
+    cg.add(var.set_div_ratio(config[CONF_DIV_RATIO]))