2X Gas Boiler Heating Thermostat Blue Temperature Regulator for Boilers Weekly Programmable 1. Working voltage: 2 x 1.5V AA battery (not included) 2. consumption: Less than150uW 3. Temperature control range: 5~99Celsius, (factory setting is 5~35Celsius) 4. Temperature limit range: 5~99Celsius 5. Temperature control accuracy: +/-1Celsius Convenient to mount on the wall or stand on somewhere. Wireless, AA battery powered, can put anywhere that you want. Can set 5+2 weekly programmable. Children lock to avoid misoperation. Anti-freeze function. colour:white material:plastic Package Contents: 2 * thermostat (with blue backlight) 4 * screws 2 * English manual 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.