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. Enter setting mode: Press "Up 1" and "Up 2" buttons at the same time. 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 * Temperature Controller 2 * Waterproof Sensor