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HOBEIAN ZG-308Z

Water valve. Works with Zigbee2MQTT with no vendor hub or cloud: it pairs with a Zigbee stick and shows up in Home Assistant.

Vendor
HOBEIAN
Model
ZG-308Z
Type
Other devices
Power
battery: an end device, does not extend the mesh
Firmware updates (OTA)
no

Find it in shops: AliExpress

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What it exposes

FeaturePropertyValuesControl
Switchswitch—settable
Valve statusvalve_statusauto, manual, idleread only
Countdown timercountdowns · 0…86400settable
Valve durationvalve_durationsread only
Total irrigation durationtotal_irrigation_durationsread only
Weather delayweather_delaycancel, hour_12h, hour_24h, hour_48h, hour_72hsettable
Current weathercurrent_weathersunny, clear, cloud, cloudy, rainy, snow, fogsettable
Weather onoffweather_onoff—settable
Get weatherget_weather—read only
Weather statusweather_statussunny, cloudy, rainy, snow, nullread only
Batterybattery% · 0…100read 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:

{
  "switch": false,
  "valve_status": "auto",
  "countdown": 43200,
  "valve_duration": 0,
  "total_irrigation_duration": 0,
  "weather_delay": "cancel",
  "current_weather": "sunny",
  "weather_onoff": false,
  "get_weather": false,
  "weather_status": "sunny",
  "battery": 87,
  "linkquality": 120
}

Send commands to zigbee2mqtt/my_device/set:

mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"switch":true}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"weather_delay":"hour_12h"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"current_weather":"clear"}'
mosquitto_pub -t zigbee2mqtt/my_device/set -m '{"weather_onoff":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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