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Zigbee devices Smart plugs with energy metering

Zemismart ZMZ609-2

Zigbee neutral touchscreen switch 2 gang with power monitoring. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Zemismart
Model
ZMZ609-2
Type
Smart plugs with energy metering
Power
mains: usually a router that extends the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
On / off (l1)state_l1—settable
On / off (l2)state_l2—settable
Countdown timercountdown_l1s · 0…43200settable
Countdown timercountdown_l2s · 0…43200settable
After power losspower_on_behavioroff, previous, onsettable
After power loss (l1)power_on_behavior_l1off, previous, onsettable
After power loss (l2)power_on_behavior_l2off, previous, onsettable
Radar switchradar_switch—settable
Child lockchild_lock—settable
Backlightbacklight% · 0…100settable
Radar distanceradar_distanceshort, medium_short, medium, medium_long, longsettable
Screen off timescreen_off_timenone, 10, 20, 30, 45, 60settable
Name (l1)name_l1—settable
Name (l2)name_l2—settable
EnergyenergykWhread only
CurrentcurrentAread only
PowerpowerWread only
VoltagevoltageVread 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_l1": "ON",
  "state_l2": "ON",
  "countdown_l1": 21600,
  "countdown_l2": 21600,
  "power_on_behavior": "off",
  "power_on_behavior_l1": "off",
  "power_on_behavior_l2": "off",
  "radar_switch": false,
  "child_lock": false,
  "backlight": 50,
  "radar_distance": "short",
  "screen_off_time": "none",
  "energy": 3.21,
  "current": 0.06,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l1":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state_l2":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_on_behavior":"previous"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_on_behavior_l1":"previous"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"power_on_behavior_l2":"previous"}'

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_l1

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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