Power consumption: <3W Storage temperature: -30°C ~ 75°C Relative humidity: 20% ~ 85% (No condensate) Relay contact capacity: Two Relay Max 10A, Direct Output Item Size: 7.5*5.5*3.1cm / 2.95*2.16*1.22in Item Weight: 80g / 2.82oz Set startup temperature: Press the "up" button once to display the starting temperature. Long press the "up" button for about 3 seconds. The required temperature can be set by the up and down keys. Set the stop temperature: Press the button once to display the stop temperature. Long press the button for about 3 seconds and the stop temperature blinks. The required temperature can be set by the up and down keys. Press "Up 1" and "Up 2" buttons at the same time to enter setting mode. How to restore factory settings: Press the "Down 1" and "Down 2" buttons at the same time to restore factory settings. Temperature correction: Press "Up 1" and "Down 1" at the same time for 3 seconds. Positive value = measured value + corrected value. (Group 2 temperature correction uses the same method.) Note: Heating Mode – Start temperature < Stop temperature Cooling Mode – Start temperature > Stop temperature Code Function Set Range Default P0 Compressor 1 delay time 0-60min 0min P1 Compressor 2 delay time 0-60min 0min P2 High temperature alarm value -55~120°C / -67~248°F 120°C / 248°F P3 Low temperature alarm value -55~120°C / -67~248°F -55°C / -67°F Package List: 1 x Temperature Controller 2 x Waterproof Sensor