Control temperature by setting the temperature set value and the different value. This mini temperature controller is an excellent and convenient multifunction device for controlling temperature in farms,greenhouse, refrigeration house . switch mode, and 0.1 Celsius accuracy, control of the temperature. The stability of temperature is one of the crucial factors that contributes to the health and safety of your animal/vegetables, by utilizing the temperature controller, you can provide an environment with optimal temperature. This advanced temperature controller can measure and control temperature from -55 to 120 Celsius. Automatic over temperature alarm. Dual heating and cooling function. Specifications: Model: - 3000 Working principle: electronic thermostat, digital thermostat Power: 30A/AC220V Thermostat temperature range: -55 Celsius - 120 Celsius Colour:Black Material:ABS Size:85x64x35mm Package Contents: 2 x Temperature Controller 2 x Sensor 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.