Smart wall thermostat with LCD display for underfloor heating, white backlight, white lighting thermostat and temperature timer. Freeze protection function.Child safety to prevent abuse. Wireless, powered bytwo 1.5VAA batteries, it can be placed anywhere.Easy to install on the wall or place anywhere. You can set in 5 + 2 weeks programmable.Gas boiler thermostats have digital LCD displays. Used to start or stop the boiler to regulate the temperature. The thermostat senses the room temperature. When the actual room temperature is lower than the set temperature, the thermostat controls the boiler to start.When the actual room temperature is higher than the temperature you set, the thermostat controls the boiler so that it stops working. Material: ABS. Dimensions: 85 x 85 x 28 mm. Sensors: integrated. Backlight : blue or orange. Operating voltage: 2 x 1.5V AA batteries (not included). Power : 150uW. Temperature control range: 5 ~ 99 (factory setting is 5 ~ 35 ). Temperature range: 5 ~ 99 . Temperature control accuracy: 1 . Contents: 1pc Thermostat. 2 mounting screws. 1 English user manual. (excluding other products) Notice: 1. Please allow 1-3cm error due to manual measurement. Thank you for your understanding. 2. Monitors are calibrated differently, and the product color shown in the image may differ slightly from the actual product. See the genuine product.