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Zigbee devices Smart plugs with energy metering

Tongou TO-Q-SYS-JZT

Din rail smart meter. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
Tongou
Model
TO-Q-SYS-JZT
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 / offstate—settable
PowerpowerWread only
CurrentcurrentAread only
VoltagevoltageVread only
EnergyenergykWhread only
AC frequencyac_frequencyHzread only
Power factorpower_factor%read only
Temperaturetemperature°Cread only
Eventeventnormal, over_current_trip, over_power_trip, high_temp_trip, over_voltage_trip, under_voltage_trip, over_current_alarm, over_power_alarm …read only
Control modecontrol_modelocal_lock, local_mode, remote_mode, full_controlsettable
Over current settingover_current_settingIgnore, Alarm, Tripsettable
Over current thresholdover_current_thresholdA · 1…50settable
Over voltage settingover_voltage_settingIgnore, Alarm, Tripsettable
Over voltage thresholdover_voltage_thresholdV · 240…295settable
Under voltage settingunder_voltage_settingIgnore, Alarm, Tripsettable
Under voltage thresholdunder_voltage_thresholdV · 90…220settable
Temperature settingtemperature_settingIgnore, Alarm, Tripsettable
Temperature thresholdtemperature_threshold°C · -25…80settable
Over power settingover_power_settingIgnore, Alarm, Tripsettable
Over power thresholdover_power_thresholdW · 1000…26000settable
Current reclosercurrent_recloser—settable
Power recloserpower_recloser—settable
Voltage recloservoltage_recloser—settable
Lcd backlight offlcd_backlight_off—settable
Lcd brightnesslcd_brightness% · 0…100settable
Lcd rotationlcd_rotationFWD, REVsettable

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": "ON",
  "power": 12.4,
  "current": 0.06,
  "voltage": 230,
  "energy": 3.21,
  "ac_frequency": 0,
  "power_factor": 0,
  "temperature": 21.6,
  "event": "normal",
  "control_mode": "local_lock",
  "over_current_setting": "Ignore",
  "over_current_threshold": 26,
  "over_voltage_setting": "Ignore",
  "over_voltage_threshold": 268,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"state":"TOGGLE"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"control_mode":"local_mode"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"over_current_setting":"Alarm"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"over_voltage_setting":"Alarm"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"under_voltage_setting":"Alarm"}'

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

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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