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Zigbee devices Smart plugs with energy metering

Aqara ZNXNKG01LM

Smart rotary knob H1 (with neutral). Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Aqara
Model
ZNXNKG01LM
Type
Smart plugs with energy metering
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
yes, through Zigbee2MQTT

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
On / off (left)state_left—settable
On / off (center)state_center—settable
On / off (right)state_right—settable
Device temperaturedevice_temperature°Cread only
Power outage countpower_outage_count—read only
Remember state after power losspower_outage_memory—settable
Operation modeoperation_modeevent, commandsettable
Action rotation angleaction_rotation_angle*read only
Action rotation angle speedaction_rotation_angle_speed*read only
Action rotation percentaction_rotation_percent%read only
Action rotation percent speedaction_rotation_percent_speed%read only
Action rotation timeaction_rotation_timemsread only
Action rotation button stateaction_rotation_button_statereleased, pressedread only
EnergyenergykWhread only
VoltagevoltageVread only
CurrentcurrentAread only
PowerpowerWread only
Action (button press)actionhold, single, double, release, start_rotating, rotation, stop_rotatingread 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:

{
  "state_left": "ON",
  "state_center": "ON",
  "state_right": "ON",
  "device_temperature": 31,
  "power_outage_count": 0,
  "power_outage_memory": false,
  "operation_mode": "event",
  "action_rotation_angle": 0,
  "action_rotation_angle_speed": 0,
  "action_rotation_percent": 0,
  "action_rotation_percent_speed": 0,
  "action_rotation_time": 0,
  "action_rotation_button_state": "released",
  "energy": 3.21,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_left":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_center":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_right":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_outage_memory":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"operation_mode":"command"}'

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: "Turn off when idle"
  mode: single
  triggers:
    - trigger: numeric_state
      entity_id: sensor.my_device_power
      below: 2
      for: "00:15:00"
  actions:
    - action: switch.turn_off
      target:
        entity_id: switch.my_device_left

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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