Features: *The thermostat of the gas boiler adopts a digital LCD display screen. Powered by two 1.5V batteries, used to control the start or stop of the boiler to regulate temperature. The thermostat detects the ambient temperature, and when the actual ambient temperature is lower than the set temperature, the thermostat controls the boiler to start operating. Then, when the actual ambient temperature is higher than the set temperature, the thermostat controls the boiler to stop running. *Convenient installation on a wall or standing in a certain place; *Powered by a 1.5V battery, it can be placed anywhere. *Programmable for 5+2 weeks. *Child lock to prevent accidental operation. *Antifreeze function. *Please ensure that your thermostat is installed by a professional. *There is a protective film on the screen. If you want to use them, please remove them. Features: *Material: Plastic+Metal. Color: Consistent with the image. *Size: approximately 86 x 86 x 28 mm. *Voltage: Two 1.5V batteries. *Power consumption: 170 UW. *Current load: 3A. *Temperature adjustment range: 5 to 90 . *Switching difference: ± 1 . Environmental temperature: -5 to 50 ° C. *Protective shell: IP20. *Non flammable shell material: PC, V-0. *Sensor: Integrated sensor. *Application: underfloor heating. Packaging content: 1 thermostat. 2 fixing screws. 1 English class.