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 RESET to restore the screen for one second, and restore the factory settings Memory function after power off. Technical parameters: Voltage 110V-230V AC 50Hz or 60Hz Max Load: EU FR Plug: 16(2)A 230V- max. 3680W.u Model: backlit and not backlit (optional) Temperature Range: -40-120°C Accuracy: 1 percent Timing Accuracy: MAX 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. Package includes: 1 x Thermostat Timer Socket with temperature sensor 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.