← Thermostats & heating
NodOn
NodOn TRV-4-1-00
- Zigbee2MQTT / ZHA
- Local control
- Zigbee
Prices verified September 2026
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The cheapest fully local Zigbee TRV we've tested — no app, no subscription and no proprietary hub, just a straight pairing to ZHA or Zigbee2MQTT. The trade-off is polish: a plasticky finish and an icon-only display rather than tado or Hive's touchscreens.
What can Home Assistant control on the NodOn TRV-4-1-00?
| Control | Type | What it does |
|---|---|---|
| Climate | Climate | hvac_modes heat/off, target and current temperature, and pi_heating_demand showing valve opening percentage. |
| Battery | Sensor (%) | Reports charge from the two AA cells. |
| HVAC action | Sensor | Reports idle/heating state independently of the climate entity. |
| Setpoint limits | Number (°C) | Separate min and max heat setpoint limit entities, configurable within the valve's 7.5–28.5°C range. |
| Local temperature offset | Number (°C) | ±2.5°C correction for a valve reading warmer or cooler than the room actually is. |
Exposes a full `climate` entity (heat/off modes, target temperature, pi_heating_demand) via ZHA or Zigbee2MQTT with no custom quirk file needed — plus separate number entities for min/max heat setpoint limits (7.5–28.5°C) and a local temperature offset (±2.5°C), which most budget Zigbee TRVs don't expose. The on-device display is icon-only and used mainly for pairing, calibration and error codes rather than showing the temperature at a glance.
Specs
| model | TRV-4-1-00 |
|---|---|
| weight | 230g including batteries |
| batteries | 2x AA/LR6, included; NodOn rates them for around 2 years |
| dimensions | 83 x 68 x 62 mm |
| requires hub | Any Zigbee 3.0 coordinator (ZHA or Zigbee2MQTT) — no proprietary hub or app |
| valve adapter compatibility | M30 x 1.5mm thread; Danfoss RA, RAV and RAVL adapters included in the box |
How does the NodOn TRV-4-1-00 compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| NodOn TRV-4-1-00 (this product) | — | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Floor Heating Thermostat W500 | £69.98 | Matter, Thread, Zigbee | Yes | Native |
| Aqara Radiator Thermostat E1 | £42.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Radiator Thermostat W600 | £49.99 | Matter, Thread, Zigbee | Yes | Native |
Frequently asked questions
- Does the NodOn TRV-4-1-00 work with Home Assistant locally?
- Yes. The NodOn TRV-4-1-00 is controlled locally in Home Assistant through Zigbee2MQTT or ZHA, so it keeps working if your internet connection or the NodOn cloud goes down. Control and state updates stay on your own network.
- Which protocol does the NodOn TRV-4-1-00 use, and do I need a hub?
- The NodOn TRV-4-1-00 uses Zigbee. To pair it with Home Assistant you need a Zigbee coordinator (for example a SkyConnect/ZBT-1 or Sonoff dongle) attached to your Home Assistant host. NodOn's own hub is not required when you integrate through Zigbee2MQTT or ZHA.
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