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. 2. Technical parameters Voltage 230V AC 50Hz Max Load: 16A(2) 3680W.u , (120V 15A for US type) Temperature Range: -40~120C Accuracy: +/- 1% Timing Accuracy: MAX 10 minutes Temperature range: -40~120C Open circuit (or less than -40C), the first row of the screen flashes display 'E1', -40~-45C, display -40C Short circuit( or more than 120C ), the first row of the screen flashes displaty 'E2', 121-129C display 120C Lower than -10C, or higher than 100C, 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 MODE. LCD display: temperature control mode Timing mode F01-F04