1、SIMPLE OPERATION: PV value and SV value are displayed after power on; Press the SET button once to start modifying SV values; Start using the thermostat in one step 2、TWO CONTROL MODES: Digital temperature controller support on off control, PID control (no self tuning function) 3、OPTIONAL MODE THERMOSTAT: Open output to heat when the temperature drop below the set value. If the temperature is higher than the set value, open the output to start cooling 4、MULTIPLE FUNCTIONS: Temperature control switch has overtemperature, low temperature alarm, undervoltage alarm, NTC disconnection alarm; Timing mode function, power saving mode function 5、APPLICATION SCENARIO: Digital temperature regulator support warehouse temperature detection and alarm, food industry process, agricultural greenhouse environment monitoring, laboratory and freezer temperature and humidity monitoring, daily heating equipment temperature detection, textile printing work, drying room heating