Features ♥Digital Display: The Temperature Controller Can Show The Real Time Temp In ℃ or ℉, Which Has Resolution of 1℃ or 0.1℃ For Higher Accuracy. ♥Temperature Control Range: Ntc Probe: -50℃～110℃, Pct Probe: -55℃～140℃, ♥Temperature Switching: Microcomputer Temperature Controller With Sensitive Sensor, Automatically Switch Between Cooling And Heating Modes, Keep Your Equipment in The Ideal Temperature Range. ♥Premium Control: Control The Temperature According to The Temperature Setting Value And Return Difference, Enables Output Control And Delay Protection, Also Has Temperature Correction And Sensor Fault Alarm. ♥Practical Works: Allows for Wide Application on Cooler, Refrigerator And So on for The Storage of Food, Vegetables, Fruits, Medicine And More. Digital Display: The Temperature Controller Can Show The Real Time Temp in ℃ or ℉, Which Has Resolution of 1℃ or 0.1℃ for Higher Accuracy. Specification: Item Type: Temperature Controller Model: ETC-974 Working Power Supply: AC230V 50/60HZ Relay Capacity: 8A 220V AC Operating Temperature: -5℃ ~ 55℃ Relative Humidity: 10%~90%RH, non condensing. Storage Temperature: -30℃ ~ 85℃ Sensor: NTC sensor with 10K resistance value. Sensor Failure Delay: 1 Minute Temperature Control Range: NTC Probe: -50℃ ~ 110℃ PCT Probe: -55℃ ~ 140℃ Display Resolution: 1℃ or 0.1℃.  Package List:1 x Temperature Controller 2 x Sensor1 x User Manual Package List 1 x Temperature Controller 2 x Sensor 1 x User Manual