Shelly
Shelly BLU TRV
- Bluetooth
Verified July 2026
A clever Bluetooth TRV that reaches Home Assistant through the built-in Shelly integration via the BLU Gateway Gen3 — all local, no cloud account required. Great precision (0.1°C steps) and 2-year AA battery life; just budget for the gateway on your first order.
In Home Assistant
| 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.