W3230 Relay Output Digital Temperature Controller -55~120C Thermostat Regulator Heating Cooling Control Switch 10A 220V/20A 12V 24V Overview: Mini temperature controller. With clear LED display for better readability. Wide temperature measuring range. Heating or cooling control. All parameters setting can be saved after short circuit. Relay output. High Control precision 0.1 centigrade Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, steamer, industrial equipment and other temperature-controlled system. Specifications: Power Supply:12V DC, 24V DC, 110V-220VAC 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 24V Environmental requirements: -10-60C , humidity 20%-85%RH Dimension:79mm *43mm*26mm Cutting Size:73mm*39mm Code table: Code Function Set Range Default P0 Heating/Cooling H/C C P1 Return Difference 0.1-30 2 P2 Setting limits to the manimum 120 120 P3 Setting limits to the minimum -55 -55 P4 Temp. Correction -20 0 P5 Delay Start 0-10min 0 Wiring Diagram 12V DC 110V-220V AC Package Content 1 x temperature controller 1 x temperatuer sensor KT3003