Model Number: SAS816WHB-0 / SAS816WHL-0 Type: Water based radiant heating / boiler heating Certification: CE logo: OEM or SASWELL color: white Introduction The SAS816WHB/SAS816WHL¡Kroom thermostat is apply to water based radiant heating,boiler heating /coolingsystem. Application This room thermostat is used in apply to Residential buildings. Features Battery back up ,and low Battery Indicator. Room temperature easy read out by Mini LCD display ,without backlight save energy; Big adjust knob is easy for older and children controlling; easy read setting temperature Optional economic operation or comfort operation Optional temperature display of Celsius or Fahrenheit scale Compressor delay option for cooling selection Day/Night switch save energy. Active output for valve actuator and passive output for boiler Technical data Voltage: 2AA alkaline batteries Room temperature setting range: 5¢J~30¢J (41¢K~86¢K) Accuracy: ¡Ó1¢J or ¡Ó1¢K?? Ambient temperature: 0~50¢Xc Protective housing: IP21 Housing material: PC+ABS Dimensions: 86mm¡Ñ86mm¡Ñ25mm wall mount 100pcs per carton. carton:51cm*30cm*31cm . Packaging Detail: 100pcs per carton. carton:51cm*30cm*31cm . Delivery Detail: for 500pcs, leading time in 25days after got receipt from bank