the Shelly BLU TRV supports external sensors like the Shelly BLU H&T and the Shelly BLU Door-/Window Sensor

To take it a step further

In-wall box

There is no relay inside

50 Hz Power Supply DC No SPECIAL FUNCTIONS Overheat Protection No Surge Protection No Power Measurement No Dimming Yes FEATURES Brightness Warm White: 750 lm Color Change No Color Index Ra > 80 Color Temperature 2700 K Filament Straight Glass/Coating Clear Predefined Effects No Protection Class IP20 Operating Temperature -10 °C to +40 °C Device Power Consumption < 1 W Smart On/Off Yes Local and Remote Control Yes Sunrise/Sunset Yes Weekly Schedule Yes Lifespan 15

Wago Gelbox Serie 221, 2x73; max. 4mm²-Klemmen Größe 2 (4Stück) IP68 Shelly Plug&Play the Shelly BLU TRV supportsMoisture protection for Wago terminal blocks of series 221 and 2273 Protection rating: IP68 (2m 2h) according to EN 60529 VDE compliant Ambient temperature Operation: 55 85 C Storage: 0 40 C