1. Function. The external temperature detector can detect the temperature. Set the start and stop temperature. Cycle timing, start and stop time, timer switch. It is widely used in intelligent control, such as carbon heating, aquaculture, greenhouse, home life and other places. . Screen lock protection function. Press the to restore the screen compatible with one second, and restore the factory settings. . Memory function after power off 2. Technical parameters EU Plug: 16(2)A 230V~ max. 3680W. u Temperature Range: -40~120°C Accuracy: +/- 1% Timing Accuracy: 10 minutes Open circuit (or less than -40°C), the first row of the screen flashes display E1, -40~-45°C, display -40°C Short circuit( or more than 120°C ), the first row of the screen flashes displaty E2, 121-129°C display 120°C Lower than -10°C, or higher than 100°C, it will not display value behind the decimal point Refrigeration mode, start temperature Stop temperature Heating mode, start temperature < stop temperature 3. Mode button Press. LCD display: temperature control mode Timing mode F01-F04 F01 Cycling timing mode, start time(ON)/stop time() cycling timing. F02 Count down ON mode, now Ti. s, delayed(start time) ON F03 Count down mode, now Ti. s ON, delayed(stop time), countdown completion, turn off the output and exit the run F04 Count down ON Count down mode, now Ti. s, delayed(start time) ON, After starting dela