It's perfect for various household, institutional & industrial heating and cooling applications.Features:Heating or cooling controlRed and blue dual led displayIndependent Dual-way temperature controllerTemperature display resolution 0.1Directly power outputSupport high(low) temperature alarm and support for power loss (the parameters of the sudden power failure are still validApplication range is like home temperature control, farm, various cold storage, greenhouse, aquarium, etcSpecifications:Display Type: DigitalMaterial: ABS+PCBStyle:Standing StationTemperature sensor: NTC 10KSenor length: 1.0mTemperature measuring range:-55 C ~ 120 C / -66F~248FResolution: 0.1 CAccuracy:1 CPower supply: 110-220VAC 50/60Hz, 12V DC , 24V DC(Please choose power supply when ordering)Power consumption: Stop temperature Code Function Set Range Default P0 Compressor 1 delay time 0-60min 0min P1 Compressor 2delay time 0-60min 0min P2 High temperature alarm value -55~120C/-67~248F 120C/248F P3 Low temperature alarm value -55~120C/-67~248F -55C/-67F Package List:1 * Temperature Controller2 * Waterproof Sensor