【TWO WORKING MODES】The LED Digital Temperature Controller can choose cooling or heating two working modes, pay attention to set the maximum/minimum upper limit temperature at the same time to avoid accidents. 【TEMPERATURE CALIBRATION】The LED Digital Temperature Controller has a temperature calibration function, you can calibrate the temperature according to your needs, and then automatically start cooling or heating to a constant temperature. 【TEMPERATURE ALARM】The LED Digital Temperature Controller has a high temperature alarm function. When the measured temperature reaches the set temperature, the controller will send an alarm to remind you even if the power is turned off. 【HIGH QUALITY】The LED Digital Temperature Controller is designed by professionals and provided directly by the manufacturer, guaranteeing brand new quality. Temp【WIDE VOLTAGE CIRCUIT】The temperature control output of the LED Digital Temperature Controller is a 10A relay, and the wide voltage circuit can meet various high-power loads. Please sure the circuit is correct.erature calibration, you can calibrate temp according to requirement.