Specifications: Temperature Control Range: -50 ~ 110℃ Resolution at -9.9 to 99.9: 0.1℃ Resolution at all other temperatures: 1℃ Measurement Accuracy: 0.1℃ Control Accuracy: 0.1℃ Refresh Rate: 0.5 Seconds Input Power (DC): 12V Measuring Inputs: NTC (10K 0.5%) Waterproof Sensor: 0.5M Output: 1 Channel Relay Output, Capacity: 10A Power Consumption: Static Current: less than equal 35mA Current: less than equal 65mA Environmental Requirements: Temperature: -10 ~ 60℃ Humidity: 20-85% P0 :Cooling / Heating; Range: C/H; Default: C P1 :Hysteresis Setting; Range:0.1-15; Default: 2 P2 :Highest Setting Limit; Range:110; Default: 110 P3: Lowest setting Limit; Range:-50; Default: -50 P4 :Temperature Correction; Range:-7~7℃; Default: 0℃ P5: Delay Start Time; Range:0-10 Minute; Default: 0 P6: High Temperature Alarm; Range:0-110; Default: Off When the Thermostat is power off, long press "- or +", you can restore the factory settings color: green+black+transparent color Material: PCB+electronic components+acrylic Package Contents: 2 * w1209 temperature controller module 2 * Plastic Case Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.