diff --git a/changelog.md b/changelog.md
index 97c850a5..7fdd1b95 100644
--- a/changelog.md
+++ b/changelog.md
@@ -4,6 +4,7 @@
 
 ### Devices
 
+- Sensor: add `always_callback` option
 - ClimateMode: Refactor climate modes in operation_mode and controller_mode, also fixes a bug for binary operation modes where the mode would be set to AWAY no matter what value was sent to the bus.
 
 ### Internals
diff --git a/docs/sensor.md b/docs/sensor.md
index c741e111..22ae2581 100644
--- a/docs/sensor.md
+++ b/docs/sensor.md
@@ -15,6 +15,7 @@ Sensors are monitoring temperature, air humidity, pressure etc. from KNX bus.
     sensor = Sensor(
         xknx=xknx,
         name='DiningRoom.Temperature.Sensor',
+        always_callback=False,
         group_address_state='6/2/1',
         sync_state=True,
         value_type='temperature'
@@ -25,6 +26,7 @@ Sensors are monitoring temperature, air humidity, pressure etc. from KNX bus.
 
 * `xknx` is the XKNX object.
 * `name` is the name of the object.
+* `always_callback` defines if a callback/update should always be triggered no matter if the previous and the new state are identical.
 * `group_address_state` is the KNX group address of the sensor device.
 * `sync_state` defines if the value should be actively read from the bus. If `False` no GroupValueRead telegrams will be sent to its group address. Defaults to `True`
 * `value_type` controls how the value should be rendered in a human readable representation. The attribut may have may have the values `percent`, `temperature`, `illuminance`, `speed_ms` or `current`.
diff --git a/home-assistant-plugin/custom_components/xknx/factory.py b/home-assistant-plugin/custom_components/xknx/factory.py
index de552ff2..005d24d5 100644
--- a/home-assistant-plugin/custom_components/xknx/factory.py
+++ b/home-assistant-plugin/custom_components/xknx/factory.py
@@ -214,6 +214,7 @@ def _create_sensor(knx_module: XKNX, config: ConfigType) -> XknxSensor:
         name=config[CONF_NAME],
         group_address_state=config[SensorSchema.CONF_STATE_ADDRESS],
         sync_state=config[SensorSchema.CONF_SYNC_STATE],
+        always_callback=config[SensorSchema.CONF_ALWAYS_CALLBACK],
         value_type=config[CONF_TYPE],
     )
 
diff --git a/home-assistant-plugin/custom_components/xknx/schema.py b/home-assistant-plugin/custom_components/xknx/schema.py
index 9c628bed..d97a532a 100644
--- a/home-assistant-plugin/custom_components/xknx/schema.py
+++ b/home-assistant-plugin/custom_components/xknx/schema.py
@@ -306,6 +306,7 @@ class NotifySchema:
 class SensorSchema:
     """Voluptuous schema for KNX sensors."""
 
+    CONF_ALWAYS_CALLBACK = "always_callback"
     CONF_STATE_ADDRESS = CONF_STATE_ADDRESS
     CONF_SYNC_STATE = CONF_SYNC_STATE
     DEFAULT_NAME = "KNX Sensor"
@@ -318,6 +319,7 @@ class SensorSchema:
                 cv.boolean,
                 cv.string,
             ),
+            vol.Optional(CONF_ALWAYS_CALLBACK, default=False): cv.boolean,
             vol.Required(CONF_STATE_ADDRESS): cv.string,
             vol.Required(CONF_TYPE): vol.Any(int, float, str),
         }
diff --git a/xknx/devices/sensor.py b/xknx/devices/sensor.py
index 1ac1471e..de62ec95 100644
--- a/xknx/devices/sensor.py
+++ b/xknx/devices/sensor.py
@@ -19,14 +19,15 @@ class Sensor(Device):
         xknx,
         name,
         group_address_state=None,
-        sync_state=True,
-        value_type=None,
+        sync_state: bool = True,
+        always_callback: bool = False,
+        value_type: str = None,
         device_updated_cb=None,
     ):
         """Initialize Sensor class."""
         # pylint: disable=too-many-arguments
         super().__init__(xknx, name, device_updated_cb)
-
+        self.always_callback = always_callback
         self.sensor_value = RemoteValueSensor(
             xknx,
             group_address_state=group_address_state,
@@ -45,6 +46,7 @@ class Sensor(Device):
         """Initialize object from configuration structure."""
         group_address_state = config.get("group_address_state")
         sync_state = config.get("sync_state", True)
+        always_callback = config.get("always_callback", False)
         value_type = config.get("value_type")
 
         return cls(
@@ -52,11 +54,16 @@ class Sensor(Device):
             name,
             group_address_state=group_address_state,
             sync_state=sync_state,
+            always_callback=always_callback,
             value_type=value_type,
         )
 
     async def process_group_write(self, telegram):
         """Process incoming and outgoing GROUP WRITE telegram."""
+        await self.sensor_value.process(telegram, always_callback=self.always_callback)
+
+    async def process_group_response(self, telegram):
+        """Process incoming GroupValueResponse telegrams."""
         await self.sensor_value.process(telegram)
 
     def unit_of_measurement(self):

diff --git a/test/devices_tests/sensor_test.py b/test/devices_tests/sensor_test.py
index 2043eb3c..5875ea4e 100644
--- a/test/devices_tests/sensor_test.py
+++ b/test/devices_tests/sensor_test.py
@@ -47,6 +47,55 @@ class TestSensor(unittest.TestCase):
         self.assertEqual(sensor.unit_of_measurement(), "K")
         self.assertEqual(sensor.ha_device_class(), None)
 
+    def test_always_callback_sensor(self):
+        """Test always callback sensor."""
+        xknx = XKNX()
+        sensor = Sensor(
+            xknx,
+            "TestSensor",
+            group_address_state="1/2/3",
+            always_callback=False,
+            value_type="volume_liquid_litre",
+        )
+
+        after_update_callback = Mock()
+
+        async def async_after_update_callback(device):
+            """Async callback."""
+            after_update_callback(device)
+
+        sensor.register_device_updated_cb(async_after_update_callback)
+
+        payload = DPTArray(
+            (
+                0x00,
+                0x00,
+                0x01,
+                0x00,
+            )
+        )
+
+        #  set initial payload of sensor
+        sensor.sensor_value.payload = payload
+
+        telegram = Telegram(group_address=GroupAddress("1/2/3"), payload=payload)
+
+        # verify not called when always_callback is False
+        self.loop.run_until_complete(sensor.process(telegram))
+        after_update_callback.assert_not_called()
+        after_update_callback.reset_mock()
+
+        sensor.always_callback = True
+
+        # verify called when always_callback is True
+        self.loop.run_until_complete(sensor.process(telegram))
+        after_update_callback.assert_called_once()
+        after_update_callback.reset_mock()
+
+        # verify not called when processing read responses
+        self.loop.run_until_complete(sensor.process_group_response(telegram))
+        after_update_callback.assert_not_called()
+
     def test_str_acceleration(self):
         """Test resolve state with acceleration sensor."""
         xknx = XKNX()

Feature request: add the "ignore_internal_state" property to "Sensors" the same way it works already for "Binary Sensors"
Hi,

In the last release the property "ignore_internal_state" was added to the knx "binary sensor", and it would be great to have this property for knx "sensors" as well.

For example I am using a sensor with type "scene_number" together with an automation in order to execute some actions within HA when a knx scene number is called, but if the same scene is called two times without any other scene number in between, the value of the HA sensor state is not changed and the automation is not called again.

Note : the KNX scene entity is no help in this case as its state in HA does not change when triggered (it stays on "scening") and is only used the other way around (make HA to trigger a KNX scene).

Thank you very much in advance !
test/devices_tests/sensor_test.py::TestSensor::test_always_callback_sensor
test/devices_tests/sensor_test.py::TestSensor::test_has_group_address test/devices_tests/sensor_test.py::TestSensor::test_process test/devices_tests/sensor_test.py::TestSensor::test_process_callback test/devices_tests/sensor_test.py::TestSensor::test_str_absolute_temperature test/devices_tests/sensor_test.py::TestSensor::test_str_acceleration test/devices_tests/sensor_test.py::TestSensor::test_str_acceleration_angular test/devices_tests/sensor_test.py::TestSensor::test_str_activation_energy test/devices_tests/sensor_test.py::TestSensor::test_str_active_energy test/devices_tests/sensor_test.py::TestSensor::test_str_active_energy_kwh test/devices_tests/sensor_test.py::TestSensor::test_str_activity test/devices_tests/sensor_test.py::TestSensor::test_str_amplitude test/devices_tests/sensor_test.py::TestSensor::test_str_angle test/devices_tests/sensor_test.py::TestSensor::test_str_angle_deg test/devices_tests/sensor_test.py::TestSensor::test_str_angle_rad test/devices_tests/sensor_test.py::TestSensor::test_str_angular_frequency test/devices_tests/sensor_test.py::TestSensor::test_str_angular_momentum test/devices_tests/sensor_test.py::TestSensor::test_str_angular_velocity test/devices_tests/sensor_test.py::TestSensor::test_str_apparant_energy test/devices_tests/sensor_test.py::TestSensor::test_str_apparant_energy_kvah test/devices_tests/sensor_test.py::TestSensor::test_str_area test/devices_tests/sensor_test.py::TestSensor::test_str_brightness test/devices_tests/sensor_test.py::TestSensor::test_str_capacitance test/devices_tests/sensor_test.py::TestSensor::test_str_charge_density_surface test/devices_tests/sensor_test.py::TestSensor::test_str_charge_density_volume test/devices_tests/sensor_test.py::TestSensor::test_str_color_temperature test/devices_tests/sensor_test.py::TestSensor::test_str_common_temperature test/devices_tests/sensor_test.py::TestSensor::test_str_compressibility test/devices_tests/sensor_test.py::TestSensor::test_str_conductance test/devices_tests/sensor_test.py::TestSensor::test_str_counter_pulses test/devices_tests/sensor_test.py::TestSensor::test_str_current test/devices_tests/sensor_test.py::TestSensor::test_str_delta_time_hrs test/devices_tests/sensor_test.py::TestSensor::test_str_delta_time_min test/devices_tests/sensor_test.py::TestSensor::test_str_delta_time_ms test/devices_tests/sensor_test.py::TestSensor::test_str_delta_time_sec test/devices_tests/sensor_test.py::TestSensor::test_str_density test/devices_tests/sensor_test.py::TestSensor::test_str_electric_charge test/devices_tests/sensor_test.py::TestSensor::test_str_electric_current test/devices_tests/sensor_test.py::TestSensor::test_str_electric_current_density test/devices_tests/sensor_test.py::TestSensor::test_str_electric_dipole_moment test/devices_tests/sensor_test.py::TestSensor::test_str_electric_displacement test/devices_tests/sensor_test.py::TestSensor::test_str_electric_field_strength test/devices_tests/sensor_test.py::TestSensor::test_str_electric_flux test/devices_tests/sensor_test.py::TestSensor::test_str_electric_flux_density test/devices_tests/sensor_test.py::TestSensor::test_str_electric_polarization test/devices_tests/sensor_test.py::TestSensor::test_str_electric_potential test/devices_tests/sensor_test.py::TestSensor::test_str_electric_potential_difference test/devices_tests/sensor_test.py::TestSensor::test_str_electrical_conductivity test/devices_tests/sensor_test.py::TestSensor::test_str_electromagnetic_moment test/devices_tests/sensor_test.py::TestSensor::test_str_electromotive_force test/devices_tests/sensor_test.py::TestSensor::test_str_energy test/devices_tests/sensor_test.py::TestSensor::test_str_enthalpy test/devices_tests/sensor_test.py::TestSensor::test_str_flow_rate_m3h test/devices_tests/sensor_test.py::TestSensor::test_str_force test/devices_tests/sensor_test.py::TestSensor::test_str_frequency test/devices_tests/sensor_test.py::TestSensor::test_str_heat_quantity test/devices_tests/sensor_test.py::TestSensor::test_str_heatcapacity test/devices_tests/sensor_test.py::TestSensor::test_str_heatflowrate test/devices_tests/sensor_test.py::TestSensor::test_str_humidity test/devices_tests/sensor_test.py::TestSensor::test_str_illuminance test/devices_tests/sensor_test.py::TestSensor::test_str_impedance test/devices_tests/sensor_test.py::TestSensor::test_str_kelvin_per_percent test/devices_tests/sensor_test.py::TestSensor::test_str_length test/devices_tests/sensor_test.py::TestSensor::test_str_length_mm test/devices_tests/sensor_test.py::TestSensor::test_str_light_quantity test/devices_tests/sensor_test.py::TestSensor::test_str_long_delta_timesec test/devices_tests/sensor_test.py::TestSensor::test_str_luminance test/devices_tests/sensor_test.py::TestSensor::test_str_luminous_flux test/devices_tests/sensor_test.py::TestSensor::test_str_luminous_intensity test/devices_tests/sensor_test.py::TestSensor::test_str_magnetic_field_strength test/devices_tests/sensor_test.py::TestSensor::test_str_magnetic_flux test/devices_tests/sensor_test.py::TestSensor::test_str_magnetic_flux_density test/devices_tests/sensor_test.py::TestSensor::test_str_magnetic_moment test/devices_tests/sensor_test.py::TestSensor::test_str_magnetic_polarization test/devices_tests/sensor_test.py::TestSensor::test_str_magnetization test/devices_tests/sensor_test.py::TestSensor::test_str_magnetomotive_force test/devices_tests/sensor_test.py::TestSensor::test_str_mass test/devices_tests/sensor_test.py::TestSensor::test_str_mass_flux test/devices_tests/sensor_test.py::TestSensor::test_str_mol test/devices_tests/sensor_test.py::TestSensor::test_str_momentum test/devices_tests/sensor_test.py::TestSensor::test_str_percent test/devices_tests/sensor_test.py::TestSensor::test_str_percent_u8 test/devices_tests/sensor_test.py::TestSensor::test_str_percent_v16 test/devices_tests/sensor_test.py::TestSensor::test_str_percent_v8 test/devices_tests/sensor_test.py::TestSensor::test_str_phaseangledeg test/devices_tests/sensor_test.py::TestSensor::test_str_phaseanglerad test/devices_tests/sensor_test.py::TestSensor::test_str_power test/devices_tests/sensor_test.py::TestSensor::test_str_power_2byte test/devices_tests/sensor_test.py::TestSensor::test_str_power_density test/devices_tests/sensor_test.py::TestSensor::test_str_powerfactor test/devices_tests/sensor_test.py::TestSensor::test_str_ppm test/devices_tests/sensor_test.py::TestSensor::test_str_pressure test/devices_tests/sensor_test.py::TestSensor::test_str_pressure_2byte test/devices_tests/sensor_test.py::TestSensor::test_str_pulse test/devices_tests/sensor_test.py::TestSensor::test_str_rain_amount test/devices_tests/sensor_test.py::TestSensor::test_str_reactance test/devices_tests/sensor_test.py::TestSensor::test_str_reactive_energy test/devices_tests/sensor_test.py::TestSensor::test_str_reactive_energy_kvarh test/devices_tests/sensor_test.py::TestSensor::test_str_resistance test/devices_tests/sensor_test.py::TestSensor::test_str_resistivity test/devices_tests/sensor_test.py::TestSensor::test_str_rotation_angle test/devices_tests/sensor_test.py::TestSensor::test_str_scene_number test/devices_tests/sensor_test.py::TestSensor::test_str_self_inductance test/devices_tests/sensor_test.py::TestSensor::test_str_solid_angle test/devices_tests/sensor_test.py::TestSensor::test_str_sound_intensity test/devices_tests/sensor_test.py::TestSensor::test_str_speed test/devices_tests/sensor_test.py::TestSensor::test_str_stress test/devices_tests/sensor_test.py::TestSensor::test_str_surface_tension test/devices_tests/sensor_test.py::TestSensor::test_str_temperature test/devices_tests/sensor_test.py::TestSensor::test_str_temperature_a test/devices_tests/sensor_test.py::TestSensor::test_str_temperature_difference test/devices_tests/sensor_test.py::TestSensor::test_str_temperature_difference_2byte test/devices_tests/sensor_test.py::TestSensor::test_str_temperature_f test/devices_tests/sensor_test.py::TestSensor::test_str_thermal_capacity test/devices_tests/sensor_test.py::TestSensor::test_str_thermal_conductivity test/devices_tests/sensor_test.py::TestSensor::test_str_thermoelectric_power test/devices_tests/sensor_test.py::TestSensor::test_str_time_1 test/devices_tests/sensor_test.py::TestSensor::test_str_time_2 test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_100msec test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_10msec test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_hrs test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_min test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_msec test/devices_tests/sensor_test.py::TestSensor::test_str_time_period_sec test/devices_tests/sensor_test.py::TestSensor::test_str_time_seconds test/devices_tests/sensor_test.py::TestSensor::test_str_torque test/devices_tests/sensor_test.py::TestSensor::test_str_voltage test/devices_tests/sensor_test.py::TestSensor::test_str_volume test/devices_tests/sensor_test.py::TestSensor::test_str_volume_flow test/devices_tests/sensor_test.py::TestSensor::test_str_volume_flux test/devices_tests/sensor_test.py::TestSensor::test_str_volume_liquid_litre test/devices_tests/sensor_test.py::TestSensor::test_str_volume_m3 test/devices_tests/sensor_test.py::TestSensor::test_str_weight test/devices_tests/sensor_test.py::TestSensor::test_str_wind_speed_kmh test/devices_tests/sensor_test.py::TestSensor::test_str_wind_speed_ms test/devices_tests/sensor_test.py::TestSensor::test_str_work test/devices_tests/sensor_test.py::TestSensor::test_sync