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, 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 run F04 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 operation Temperature 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 modification Screen 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 off Technical parameters: : Temperature Controller Model Number: Thermostat Timer Socket Max Measuring Temperature: 100C - 119C Display Type: Digital Usage: household Type: Charger Style: Standing and Wall Hanging Display Size: 2.0 - 3.9 Inches Cable Length: 1M Is Smart Device: NO Voltage: AC230V Max Load: 16A(2) 3680W.u Temperature Range: -40~120C Accuracy: +/- 1% Timing Accuracy: MAX 10 minutes 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 Greater than Stop temperature Heating mode, start temperature Less than stop temperature Plug Type: EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. color: White material: plastic Package Contents: 1 * Temperature Controller Socket Only 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.