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Moes ZM7LT1

Single-phase energy meter with CT clamp. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Moes
Model
ZM7LT1
Type
Other devices
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
EnergyenergykWhread only
VoltagevoltageVread only
CurrentcurrentAread only
PowerpowerWread only
AC frequencyac_frequencyHzread only
Reverse energyreverse_energykWhread only
Faultfault—read only
Over current thresholdover_current_thresholdA · 1…63settable
Clear accumulated energyclear_event—settable
Refresh measurementsrefresh_measurementspresssettable
Active energyactive_energykWhread 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:

{
  "energy": 3.21,
  "voltage": 230,
  "current": 0.06,
  "power": 12.4,
  "ac_frequency": 0,
  "reverse_energy": 0,
  "fault": 0,
  "over_current_threshold": 32,
  "clear_event": false,
  "refresh_measurements": "press",
  "active_energy": 0,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"clear_event":true}'

Watch the topics live from the browser: MQTT client.

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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