This controller is suitable for temperature control of medium and low temperature cold storage With temperature measurement, display and control functions. Calibration, forced defrost, over temperature. Alarm and sensor failure alarm, one key to restore the factory default value, parameter preset, one key to restore Adopt touch button design, with button lock function Single sensor input: cabinet temperature sensor (Pb1). Dual control output: refrigeration and defrost. Technical parameter: Temperature measurement range: -40℃-99℃ Temperature control range: -40℃-85℃ Accuracy: ±1℃ at(-30℃-50℃) ±2℃ other ranges Resolution: 0.1℃ Power consumption: Less than 5W Output capacity: refrigeration: 10A or 220VAC defrost: 10A or 220VAC single buzzer alarm output Power supply: 220VAC ±10 percent , 50 or 60Hz Ambient temperature: -10℃-60℃ Probe type: (10KΩ or 25℃, B value 3435K) Material: plastic Colour: Black Package Contents: 1 x Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.