: Connect the power supply and equipment to supply power to the controller. At this time, it is displayed as measuring temperature. Press SET once, and 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: Blinking indicates cooling or heating start delay, always on indicates Features: - Control temperature by setting the temperature setting value and the difference value. - Digital and high accuracy temperature controller, the output is a 20A relay that meets a variety of high power loads. - Can be used for water tanks, refrigerators, industrial chillers, steamers, industrial equipment, etc. - Connect the control circuit to power the controller, and the display shows the ambient temperature. Specification: Product name: W3230 temperature controller digital display temperature controller module Power Supply:DC 12V/DC 24V/AC 110-220V Temperature Control Range:-55℃-120℃ Resolution Ratio: 0.1°C(-9.9-99.9); 1°C(other range) Color of Displaying: red/blue Measurement accuracy: ±0.1°C Control accuracy: 0.1°C Sensor: NTC10K Waterproof sensor Output: Relay Contact Capacity 20A 12V / 10A 220V Environmental requirements: -10-60°C , humidity 20%-85%RH Dimension:79mm *43mm*26mm Cutting Size:73mm*39mm Sensor wire: 1 meter Function P0: refrigeration or heating mode P1: return difference setting P2: maximum temperature setting upper limit P3: minimum temperature setting lower limit P4: temperature correction P5: delay start time (unit: minute) Package includes: 1 x Temperature Controller 1 x 1m Probe Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.