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.Mode button: Press MODE. LCD display: temperature control mode. Timing mode F01-F04. F01 Cycling timing mode, start time(ON)/stop time(OFF) cycling timing. F02 Count down ON mode, now Ti.s OFF, delayed(start time) ON. F03 Count down OFF mode, now Ti.s ON, delayed(stop time) OFF, countdown completion, turn off the output and exit the runF04 Count down ON Count down OFF mode, now Ti.s OFF, delayed(start time) ON, After starting delayed ( Stop time )OFF, Stop the time to finish the countdown, close out the output and exit the operationTemperature correction function: Long press mode button on electricity, real time temperature calibration after 2 seconds. Real time temperature correction range: -9.9-9.9C. Long press the SET for 5 seconds to automatically exit, do not save modification. Long press MODE button to exit, save the cuttent correction modificationScreen lock protection function. Press the RESET to restore the screen for one second, and restore the factory settings.Long press MODE for 5 seconds, Then the heating or the coolling mode will flash, then it can work. Memory function after power offTechnical parameters:: Temperature ControllerModel Number: Thermostat Timer SocketMax Measuring Temperature: 100C - 119CDisplay Type: DigitalUsage: householdPower Type: ChargerStyle: Standing and Wall HangingDisplay Size: 2.0 - 3.9 InchesCable Length: 1MIs Smart Device: NOVoltage: AC230VMax Load: 16A(2) 3680W.uTemperature Range: -40-120CAccuracy: +/- 1%Timing Accuracy: MAX 10 minutesOpen circuit (or less than -40C), the first row of the screen flashes display "E1", -40--45C, display -40CShort circuit( or more than 120C ), the first row of the screen flashes displaty "E2", 121-129C display 120CLower than -10C, or higher than 100C, it will not display value behind the decimal pointRefrigeration mode, start temperature Greater than Stop temperatureHeating mode, start temperature Less than stop temperaturePlug Type: EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on.color: Whitematerial: plasticPackage Contents:2 x Temperature Controller SocketOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.