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Zigbee devices Temperature and humidity sensors

EFEKTA EFEKTA_T8_POW

Temperature sensor with a signal amplifier, support up to 8 DS18B20. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
EFEKTA
Model
EFEKTA_T8_POW
Type
Temperature and humidity sensors
Power
battery: an end device, does not extend the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
Temperature (1)temperature_1°Cread only
Temperature (2)temperature_2°Cread only
Temperature (3)temperature_3°Cread only
Temperature (4)temperature_4°Cread only
Temperature (5)temperature_5°Cread only
Temperature (6)temperature_6°Cread only
Temperature (7)temperature_7°Cread only
Temperature (8)temperature_8°Cread only
Batterybattery% · 0…100read only
Low batterybattery_low—read only
Number of sensorsnumber_of_sensors—read only
UptimeuptimeHoursread only
Mains voltagemains_voltageVread only
Reading intervalreading_intervalsec · 3…360settable
Tx radio powertx_radio_power4dbm, 19dbmsettable
Resolutionresolution9 bit, 10 bit, 11 bit, 12 bitsettable
Smart sleepsmart_sleep—settable

MQTT: state and commands

Zigbee2MQTT publishes the device state to zigbee2mqtt/my_device (my_device is the name you give the device). An example message:

{
  "temperature_1": 21.6,
  "temperature_2": 21.6,
  "temperature_3": 21.6,
  "temperature_4": 21.6,
  "temperature_5": 21.6,
  "temperature_6": 21.6,
  "temperature_7": 21.6,
  "temperature_8": 21.6,
  "battery": 87,
  "battery_low": false,
  "number_of_sensors": 0,
  "uptime": 0,
  "mains_voltage": 0,
  "reading_interval": 182,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"tx_radio_power":"19dbm"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"resolution":"10 bit"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"smart_sleep":true}'

Watch the topics live from the browser: MQTT client.

Home Assistant automation example

Zigbee2MQTT creates Home Assistant entities from the device name. If it is called my_device, an automation in automations.yaml can look like this:

- alias: "Room too warm"
  mode: single
  triggers:
    - trigger: numeric_state
      entity_id: sensor.my_device_temperature
      above: 26
      for: "00:10:00"
  actions:
    - action: notify.notify
      data:
        message: "Temperature above 26 °C"

Check the YAML: YAML checker.

How to pair it

  1. In Zigbee2MQTT click Permit join.
  2. Put the device in pairing mode: usually a long press of the reset button (5–10 s) until the LED blinks; bulbs: switch the power off and on 5–6 times.
  3. Keep the device close to the coordinator or a router while pairing.
  4. Give it a clear name: MQTT topics and Home Assistant entities are built from it.

Exact procedure and model notes: the device page in the Zigbee2MQTT docs. No coordinator yet: coordinator picker.

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