Frost protection-With frost protection turned on, when the temperature below 5C, the thermostat automatically starts heating to keep your home warm. ECO mode offers energy-saving solution-You can set the energy-saving temperature by yourself. When the energy-saving mode is turned on, the thermostat can maintain the temperature at the energy-saving temperature to save energy . Child lock-In order to avoid the danger or waste of electricity caused by children touching the switch by mistake, add a security . Temperature calibration-In case of the temperature variation between the floor and the air, you can set the calibration value by App, to make sure the final temperature reaches your perfect value. Suitable for hidden box-Compatible with standard 86mm square cassettes and 60mm european cassettes to meet all installation environments. Share device-Share controls with your family to manage your smart home and protect your warm home. WiFi Smart Thermostat Wireless remote control Timer function-weekly programmable Voice control-voice control via Alexa and assistant Reliable design Wiring diagram Technical Specifications: Supply voltage: AC100~240V; 50/60Hz Power consumption: 1W Max (Wi-Fi version 1.5W Max) Temperature setting range: 5-95 External sensor upper limit: 5~60 (It only works when choosing All on 2 in advanced setting) Switch deviation: 0.5~10 ,Factory setting 1 Ambient temperature: -5~50 Protection level: IP20 housing material: Anti- PC Frequency Band: 2402MHz~2482MHz Maximum Radio Transmit Power: Less than 20dBm Specifications: C: Gas boiler Colour:White Material:Plastic Package Contents: 1x Tuya WiFi Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.