Description: Function: -Cooling or heating working -Hysteresis setting for example, environment temp is 30, the setting temp is 25, the hysteresis setting temp is 2, when cooling reach to 23, relay off and cooler off, then temp go up to 25, the relay on and cooler start -Set highest/ lowest upper limit temp to avoid accident -Temperature calibration, you can calibrate temp according to requirement Temp (after) = temp (before) + correction value -Turn on/ off button -Delay start to protect your device -High temp alarm, when measure temp reach to the setting temp, controller will alarm - factory settings, when the setting value is confusion, please factory Specification: Specifications: Control Temp Range: -50-120 Power Requirement: DC/AC 12V Resolution: 0.1 Measuring Input: NTC(10k 0.5%) waterproof sensor 0.5m Relay Output: 1 way Rated Current: 10A Control Accuracy: 0.1 Hysteresis Accuracy: 0.1 Refresh Time: 0.5s Power consumption: Static current<=35MA, attract current: <=65MA Display Type: 0.28" 3 digits display tube Environmental Requirement: -10-60, humidity: 20-85% How to use: Connect DC/ AC12Vor 24V power and the load Setting the desires temp: 1. Press the SET button, the LED flash the temperature 2. Press +- button to change the temperature value 3. Press SET to save and exit after setting successfully. or no operation 10s, temp save and exit Size Chart: Control panel: approx. 100x52x27mm/3.94x2.05x1.06 inch Installation size: approx. 63.5x45.5mm/2.5x1.79 inches Package Includes: 1 Piece digital temperature controller