_x000D_ Functions: 100% 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. High temp alarm, when measure temp reach to the setting temp, controller will alarm. Feature: Power Supply:12V DC/24V DC/110V-220V AC Temperature Control Range:-55-120 Resolution Ratio: 0.1C(-9.9-99.9); 1C(other range) Color of Displaying: red/blue Measurement accuracy: 0.1C Control accuracy: 0.1C Sensor: NTC10K Waterproof sensor Output: Relay Contact Capacity 10A 220V / 20A 12V / 20A 24V Environmental requirements: -10-60C , humidity 20%-85%RH Dimension:79mm *43mm*26mm Cutting Size:73mm*39mm Sensor wire: 1 meter W3230 Instructions: Connect the power supply and equipment to supply power to the controller. At this time, it is displayed as measuring temperature. Press SET once, the display temperature will flash, press +- to set the desired temperature (press +- to quickly raise and lower) After finishing, press SET to confirm the return. At this time, the controller automatically performs relay on/off according to the setting! The output of the thermostat is a 20A relay, which satisfies various high-power loads. When the control circuit is connected, the thermostat can be powered. At this time, the display shows the ambient temperature. Indicator light, digital tube status description Indicator light: Blinking indicates cooling or heating start delay, always on indicates that the relay is closed Digital tube: Display LL is the sensor open circuit, please follow the instructions to connect the sensor; display HH is out of the measurement range, the thermostat will forcibly open the relay; display --- for high temperature alarm Parameter function description Press and hold SET for 5 seconds to enter the main menu settings, press +- to switch P0...P6, long press SET or 10 seconds without button action, the controller automatically confirms the return. P0 cooling and heating mode Press and hold SET for 5 seconds to display P0, press SET once to set the working mode, press +- to switch [H is heating mode] [C is cooling mode] Press SET once to return, long press SET or 10 seconds without button action controller automatically confirm carry out. In the cooling mode: when the temperature measurement value the temperature set point, the refrigeration relay is closed and the refrigerator is started; when the temperature measurement value temperature set point - the return difference, the refrigeration relay is turned off and the refrigerator is turned off. In the heating mode: when the temperature measurement value temperature set point, the heating relay pulls in and the heater starts; when the temperature measurement value temperature set point + hysteresis, the heating relay is turned off and the heater is turned off. P1 hysteresis setting Press and hold SET for 5 seconds to display P0, press +- to switch to P1, press SET once to return the difference, press +- to set the difference to 0.1-15, press SET once after completion, long press SET or 10 seconds without button The motion controller automatically confirms the completion. In the cooling mode: when the temperature measurement value the set value, the relay is closed, the refrigerator starts; when the temperature measurement value the set value - the difference value, the relay is turned off and the refrigerator is turned off. For example, if the environment is 30 C, the set value is 25 C, and the hysteresis is set to 2 C. After the power is turned on, the relay closes the refrigerator to start. When the cooling reaches 23 C, the relay turns off the refrigerator and the refrigerator is turned off. The open temperature starts to rise. When it rises to the set value of 25 C, the relay closes the refrigerator again, so the repeated cycle control temperature is not higher than 25 C. In the heating mode: when the temperature measurement value the set value, the relay pulls in and the heater starts; when the temperature measurement value the set value + the difference value, the relay is turned off and the heater is turned off. For example, if the environment is 10 C, the set value is 25 C, and the hysteresis is set to 2 C. After the power is turned on, the relay closes the heater to start. When it is heated to 27 C, the relay turns off the heater and the heater is turned off. The on temperature begins to decrease. When it drops to the set value of 25 C, the relay closes the heater to start again, so the repeated cycle control temperature is not lower than 25 C. P2 maximum temperature setting upper limit In order to avoid the danger of setting the temperature too high due to the misoperation of others, the thermostat has the highest setting upper limit function,