Shelly
Shelly BLU TRV
- Native integration
- Local control
- Bluetooth
Prices verified September 2026
See more thermostats & heating picks on our Amazon storefront →Our verdict
Reads two temperature sensors and battery over the native Shelly integration via BLU Gateway; that's the extent of it, with no climate entity, setpoint, or calibration until you add the community hass_shelly_blu_trv HACS integration plus a dedicated ESPHome Bluetooth proxy, since a Shelly relay won't substitute. Once that's running, precision is genuinely excellent at 0.1°C steps, and 2-year AA battery life beats SONOFF's TRVZB (about 6 months) and matches Bosch. At £51.99 with gateway included it undercuts Bosch (£59.99), but demands more setup graft than the plug-and-play Aqara or SONOFF options; budget an evening, not just an order.
What can Home Assistant control on the Shelly BLU TRV?
| Control | Type | What it does |
|---|---|---|
| Temperature (x2) | Sensor | Two temperature readings relayed via the BLU Gateway — no climate/setpoint control natively |
| Battery | Sensor (%) | Battery level |
Worth knowing before buying for full climate control: the native Shelly integration via the BLU Gateway only forwards passive BTHome broadcasts, so it gives you a couple of temperature readings and a battery sensor — no climate entity, and you can't set temperature or run calibration through it. Full thermostat control needs the community hass_shelly_blu_trv HACS integration paired with a dedicated ESPHome Bluetooth proxy (a Shelly relay device won't substitute). That HACS integration also exposes a mounting-status sensor, worth wiring into an alert automation since a bad mount is a real, device-specific fault mode.
Specs
| dimensions | 78 x Ø54 mm, 107g |
|---|---|
| battery type | 2x AA (LR6) 1.5V, included; ~2 years typical life |
| bluetooth range | Up to 10m indoors / 30m outdoors (Bluetooth LE) |
| temperature range | 5-35°C setpoint range, 0.1°C precision (rated operating environment -20 to 60°C) |
| valve adapter compatibility | Fits M30x1.5mm valves directly; adapters included for Danfoss RA, RAV, RAVL, Caleffi, Giacomini and M28x1.5mm variants |
How does the Shelly BLU TRV compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| Shelly BLU TRV (this product) | £51.99 | Bluetooth | Yes | Native |
| 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 Shelly BLU TRV work with Home Assistant locally?
- Yes. The Shelly BLU TRV is controlled locally in Home Assistant through a built-in Home Assistant core integration (shelly), so it keeps working if your internet connection or the Shelly cloud goes down. Control and state updates stay on your own network.
- Which protocol does the Shelly BLU TRV use, and do I need a hub?
- The Shelly BLU TRV uses Bluetooth. To pair it with Home Assistant you need a Bluetooth adapter on your Home Assistant host or an ESPHome Bluetooth proxy. Shelly's own hub is not required when you integrate through a built-in Home Assistant core integration (shelly).
- How much does the Shelly BLU TRV cost in the UK?
- The lowest price we have listed for the Shelly BLU TRV is £51.99 at Shelly Store UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.