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 Sensor 1 x User Manual 1Premium 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. 2Has Varied Mode: Comes with various management method by control temperature and time, and the easy adjustment will meet your work needs. 3Reliable in Use: The microcomputer temperature controller with sensitive sensor supports simple and efficient control over heating and cooling. 4Practical Works: Allows for wide application on cooler, refrigerator and so on for the storage of food, vegetables, fruits, medicine and more. 5Digital Display: The temperature controller can show the real time temp in or , which has resolution of 1 or 0.1 for higher accuracy.