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Zigbee devices Temperature and humidity sensors

EFEKTA EFEKTA_PST_DUO_V1_LR

Water, gas smart pressure monitor with two sensors and signal amplifier. 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_PST_DUO_V1_LR
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
Pressure (1)pressure_1kParead only
Bar (1)bar_1barread only
Psi (1)psi_1psiread only
Temperature (1)temperature_1°Cread only
Pressure offset (1)pressure_offset_1hPa · -100…100settable
Raw temperature cal (1)raw_temperature_cal_1raw unit · -8192…8192settable
Range (1)range_10-10 Bar, 0-16 Barsettable
Pressure (2)pressure_2kParead only
Bar (2)bar_2barread only
Psi (2)psi_2psiread only
Temperature (2)temperature_2°Cread only
Pressure offset (2)pressure_offset_2hPa · -100…100settable
Raw temperature calibration (2)raw_temperature_calibration_2raw unit · -8192…8192settable
Range (2)range_20-10 Bar, 0-16 Barsettable
Batterybattery% · 0…100read only
VoltagevoltagemVread only
Low batterybattery_low—read only
UptimeuptimeHoursread only
Reading intervalreading_intervalsec · 10…360settable
Tx radio powertx_radio_power4dbm, 19dbmsettable
Smart sleepsmart_sleep—settable
Config report enableconfig_report_enable—settable
Comparison previous datacomparison_previous_data—settable
Overheating (1)overheating_1FALSE, TRUEread only
Overheating (2)overheating_2FALSE, TRUEread only

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:

{
  "pressure_1": 1012,
  "bar_1": 0,
  "psi_1": 0,
  "temperature_1": 21.6,
  "pressure_offset_1": 0,
  "raw_temperature_cal_1": 0,
  "range_1": "0-10 Bar",
  "pressure_2": 1012,
  "bar_2": 0,
  "psi_2": 0,
  "temperature_2": 21.6,
  "pressure_offset_2": 0,
  "raw_temperature_calibration_2": 0,
  "range_2": "0-10 Bar",
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"range_1":"0-16 Bar"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"range_2":"0-16 Bar"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"tx_radio_power":"19dbm"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"smart_sleep":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"config_report_enable":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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