It can process information by microcomputer according to users temperature setting, and control the switch. Used in some situations needed temperature control, such as household, office, automatic control heating equipment or cooling equipment. Function: Users can set temperature in the range of 0~40?C When the environmental temperature is lower 1?C than the set temperature, it can automatically turn on switch to startup the equipment. After the environmental temperature reaches the setting temperature, the switch will automatically turn off, the equipment stops. Users can set four groups of temperature according to their life custom. It can adjust temperature automatically and circularly. Technical Performance: Temperature Control Range:0?C - 40?C Temperature Control Error:±0.5?C Load Voltage:220V/50HZ Voltage Range:160V-240V Rating Current:resistive load 10A, inductive load 6A Show:LCD Install:plug socket Battery:2 pieces of No.7 batteries Size:106X62X46(mm)