LCD Gas Boiler Heating Temperature Controller Digital Weekly Programmable Thermostat Wall Mounted Thermoregulator with backlight Features: White backlight. Easy operation even at night Make contribution to environmenttal protection by saving energy You can program the thermostat and let it work automatically Specifications: Display accuracy:0.5 or 1F Probe sensor:NTC(10k)1% Contact capacity: 5A/250V Working environment temperature: 0~70C/32~158F Range of temperature adjustment: 5~35C/41~95F Range of temperature display: 0~40C/32~99F Output: Switch relay Insulating condition: Normal environment Running program:Set per 1 week as a cycle Installation:Wall mounted or on battery seat Power:230V AC (Wall mounted) Power supply: two AA* 1.5V alkaline batteries (not included). (battery seat) Shell Material PC+ABS (Flame Retardant) Size(mm):86*86*27mm / 3.39*3.39*1.10inch Package included: 1 x Programmable Thermostat 1 x User's Manual 2 x Screws