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Zigbee devices Smart plugs with energy metering

Aqara WS-K02E

Light Switch H2 US (double rocker). Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Aqara
Model
WS-K02E
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
PowerpowerWread only
On / off (top)state_top—settable
Device temperaturedevice_temperature°Cread only
Power outage countpower_outage_count—read only
After power losspower_on_behavioron, previous, off, invertedsettable
Operation mode (top)operation_mode_topdecoupled, control_relaysettable
Lock relay (top)lock_relay_top—settable
Multi click (wireless)multi_click_wireless—settable
Led disabled nightled_disabled_night—settable
Flip indicator lightflip_indicator_light—settable
Mode switchmode_switchquick_mode, anti_flicker_modesettable
Action (button press)actionhold_top, hold_wireless, single_top, single_wireless, double_top, double_wireless, release_top, release_wirelessread 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:

{
  "power": 12.4,
  "state_top": "ON",
  "device_temperature": 31,
  "power_outage_count": 0,
  "power_on_behavior": "on",
  "operation_mode_top": "decoupled",
  "lock_relay_top": false,
  "multi_click_wireless": false,
  "led_disabled_night": false,
  "flip_indicator_light": false,
  "mode_switch": "quick_mode",
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_top":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_on_behavior":"previous"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"operation_mode_top":"control_relay"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"lock_relay_top":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"multi_click_wireless":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: "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_top

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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