STC-3000 Microcomputer Temperature Controller 24V Digital Thermoregulator With NTC Probe Cool Heat Sensor It's perfect for various household, institutional & industrial heating and cooling applications. Features: Cool or Heat Easy Control --- Control temperature by setting the temperature set value and the different value. Dual heating and cooling function. Automatic over temperature alarm. Easy Use --- With large and clear LED display for better read ability, simple operating panel for easy use, programmable controller ,Can choose Heating or cooling control. Precision Control --- This digital temperature controller can measure and control temperature from -55 to 99 celsius; Fully utilize the microcomputer and NTC probe to have this controller has great accuracy up to 0.1 celsius. Safe and Reliable --- ABS anti-flamming plastic shell, which is well protect the component from damage; Alarm when temperature exceeds temperature limit protect product for a long time use. Wide Application --- This temperature regulator can be used for refrigerator, coffee maker, aquarium, water tank, kiln, furnace, greenhouse, incubator, hatching, aquaculture, greenhouse cultivation, brewing, etc. Specifications: Material: PCB Board + Plastic Shell Power Supply: DC 12V/DC 24V/AC 110-220V (optional) Color: gray & orange Temperature measuring range: -50°~99° Accuracy: ±1°(50°- 70°) Resolution: 0.1° Power consumption: <3W Sensor: NTC sensor(IPC) Sensor error delay: 1 minute Relay contact capacity: Cool(10A/250VAC); Heat(10A/250VAC) Ambient temperature: 0°- 60° Storage temperature: -30°- 75° Relative humidity: 20-85%(No condensate) Sensor length: 1M (include the probe) Front panel size: 75*34.5mm Mounting size: 71*29mm Item Size: 85*75*34.5mm/3.3*3.0*1.4in Package Weight:     12V/24V: 106g/3.7oz     110-220V: 120g/4.2oz Package Size: 85*75*34.5mm/3.3*3.0*1.4in Package List: 1 * STC-3000 Digital Thermostat 1 * NTC Probe