Drayton
Drayton Wiser Smart Radiator Thermostat
- HACS component
- Local control
- Zigbee
Prices verified September 2026
See more thermostats & heating picks on our Amazon storefront →Our verdict
The obvious add-on once you already run a Wiser HeatHub: around £49 a radiator, quiet, and fully controllable per-room in Home Assistant via the local-API wiser HACS integration. It ships with two adapters covering roughly 90-95% of UK valve bodies — standard M30x1.5mm valves (Drayton, Honeywell, Pegler, Myson, Siemens) plus a Danfoss RA adapter — so most households fit it without buying extra parts, and its two AA batteries last around 12 months. Unlike the Kit 1 bundle, which gets you the HeatHub and one room, this is a zone-by-zone add-on, not a starting point — and it only talks to Wiser hubs, so don't buy it for a Zigbee2MQTT setup.
What can Home Assistant control on the Drayton Wiser Smart Radiator Thermostat?
| Control | Type | What it does |
|---|---|---|
| Room climate | Climate entity (shared per room) | Target temperature and mode, aggregating every TRV in the room — not a separate entity per valve |
| Room sensors | Sensor (temp/humidity/battery) | Per-room diagnostics |
Control in HA is per-room, not per-valve — the wiser HACS integration aggregates every TRV in a room into one climate entity, so an automation reading hvac_action can suppress a separate portable heater the moment Wiser reports that room as actively heating, avoiding double-heating room-wide rather than valve-by-valve. It can physically join a generic Zigbee2MQTT network, but system_mode/running_state aren't exposed there and one report found the setpoint periodically reverting to 20°C — confirming it's built to run only against its own HeatHub, not as a standalone Zigbee TRV.
Specs
| model | WV704R0A0902 |
|---|---|
| batteries | 2x AA (LR6, 1.5V alkaline) |
| dimensions | 93mm (H) x 51mm (diameter) |
| battery life | Approx. 12 months, dependent on battery type and interaction frequency |
| requires hub | Wiser HeatHub (any Wiser kit) |
| valve adapter compatibility | Ships with 2 adapters covering roughly 90-95% of UK TRV bodies: standard M30x1.5mm valves (common on Drayton, Honeywell, Pegler, Myson, Siemens) plus a dedicated Danfoss RA adapter; other valve types need a separately sourced TRV adapter |
How does the Drayton Wiser Smart Radiator Thermostat compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Drayton Wiser Smart Radiator Thermostat (this product) | £49 | Zigbee | Yes | HACS |
| Aqara Floor Heating Thermostat W500 | £69.98 | Matter, Thread, Zigbee | Yes | Native |
| Aqara Radiator Thermostat E1 | £54.98 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Radiator Thermostat W600 | £49.99 | Matter, Thread, Zigbee | Yes | Native |
Frequently asked questions
- Does the Drayton Wiser Smart Radiator Thermostat work with Home Assistant locally?
- Yes. The Drayton Wiser Smart Radiator Thermostat is controlled locally in Home Assistant through a community integration installed through HACS (wiser), so it keeps working if your internet connection or the Drayton cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Drayton Wiser Smart Radiator Thermostat use, and do I need a hub?
- The Drayton Wiser Smart Radiator Thermostat 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. Drayton's own hub is not required when you integrate through a community integration installed through HACS (wiser).
- How much does the Drayton Wiser Smart Radiator Thermostat cost in the UK?
- The lowest price we have listed for the Drayton Wiser Smart Radiator Thermostat is £49 at Amazon UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.