Function The external temperature detector can detect temperature. Users can set start and stop temperature, cycle timing, start time, stop time and timer switch. This product is compatible with carbon heating, aquaculture, greenhouse, home life and other intelligent control scenarios. Technical Parameters Voltage: 110V~230V AC 50Hz/60Hz Max Load: 16A, 3680W (15A for US type) Temperature Range: -40~120°C Temperature Accuracy: +/- 1% Timing Accuracy: MAX 10 minutes Error Display Specifications: - In case of open circuit or temperature lower than -40°C, the first row of the screen flashes and displays 'E1'; when temperature is between -40°C and -45°C, the screen displays -40°C. - In case of short circuit or temperature higher than 120°C, the first row of the screen flashes and displays 'E2'; when temperature is between 121°C and 129°C, the screen displays 120°C. - When temperature is lower than -10°C or higher than 100°C, decimal value will not be displayed on the screen. - In refrigeration mode, start temperature is higher than stop temperature. - In heating mode, start temperature is lower than stop temperature. Mode Button Instruction Press the MODE button, the LCD displays temperature control mode. Timing modes include F01-F04: - F01: Cycling timing mode, cycle timing runs according to set ON start time and OFF stop time. - F02: Count down ON mode, the device is OFF initially, and turns ON after the set start time countdown finishes. - F03: Count down OFF mode, the device is ON initially, turns OFF after the set stop time countdown finishes, then turns off output and exits operation. - F04: Count down ON and count down OFF mode, the device is OFF initially, turns ON after the set start time countdown finishes, then turns OFF after the set stop time countdown finishes, then turns off output and exits operation. Temperature Correction Function Long press the MODE button when the device is powered on, enter real-time temperature calibration after 2 seconds. Real-time temperature correction range is -9.9~9.9°C. Long press the SET button for 5 seconds to exit automatically without saving modifications. Long press the MODE button to exit and save current correction modifications. Screen Lock Protection Function The device is equipped with screen lock protection function. Reset Function Press the RESET button for 1 second to reset the screen and restore factory settings. Power Off Memory Function The device is equipped with memory function after power off. Package Content 1 x Thermostat Timer Socket with temperature sensor 1 x Box