Zigbee 3.0 thermostatic radiator valve with a backlit LCD that meters hot-water flow to each hydronic radiator. Home Assistant sets temperatures and schedules, reads the valve opening percentage, and can feed an external temperature sensor for accurate room control, fully locally over ZHA or Zigbee2MQTT.
Works on integrations
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Setup guides
Roles it can fill
Fits M30x1.5 valve bodies with included adapters and runs on 3x AA batteries. Frost protection, child lock, and open-window detection are built in; valve-opening control needs firmware 1.1.4+ and the external sensor input needs 1.2.1+ on ZHA. Works with any Zigbee 3.0 coordinator, though not the legacy Sonoff ZBBridge.
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