Made of high quality plastic material, it is durable, high temperature resistant and can be used for a long time. This is a general single sensor temperature controller with strong anti-interference ability and stability. Miniaturized design, small size, light weight, versatility, fast and reliable data reading. It has the functions of refrigeration, defrosting, temperature alarm and so on. It is easy to use. Compressor protection delay adjustable, suitable for refrigeration industry such as refrigeration storage, refrigeration truck. Operating Environment Temperature: 0 Celsius - 60 Celsius Power Supply Voltage: 220VAC +/- 10% 50 / 60Hz Power Consumption: Less Than 3W Temperature Range: -50 Celsius - 99 Celsius Temperature Control Range -40 Celsius - 50 Celsius Storage Temperature: -30 Celsius -75 Celsius Resolution: 1 Celsius Temperature Measurement Accuracy: +/-1 Celsius (When the temperature is - 40Celsius- +50Celsius, +/-2Celsius at other) Compressor Delay Time: 1 Minute Relay Contact Capacity: 10A/220VAC Relative Humidity: 20%-85% (No Condensation) Mounting Hole Size: . 70x28.8mm / 2.x1.1in Size: . 75x34.5x85mm / 3.0x1.4x3.3in Material:plastic colour:Black Package Contents: 1 x Temperature Controller 1 x Cable Only the above package content, other products are not included. Note: Light 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.