Digital Temperature Controller 12V / 24V / 110V-220V Thermostat Cooling Heating Temperature Meter Switch Regulator _x000D_ Features: * new and high quality *Can select cooling or heating working mode *Set highest/ lowest upper limit temp to avoid accident *Automatically start cooling or heating for constant temperature *Temperature calibration, you can calibrate temp according to requirement Specifications: *Temperature Range: -55-120 degree Celsius *Control Temperature Accuracy: 0.1 degree Celsius *Display Color: Red and Blue *Optional Power Supply Voltage: 12V/ 24V / 110V-220V *Data Save: Yes *Relay: 20A *Dimensions: 79 *43 *26 mm (Approx.) *Hole Size: 74 *39mm (Approx.) Package Contents: 1 * Temperature Controller Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. _x000D_