Function: 1.The external temperature detector can detect the temperature. 2.Set the start and stop temperature. 3.Cycle timing, start and stop time, timer switch. 4.It is widely used in intelligent control, such as carbon heating, aquaculture,greenhouse, home life and other places. 5.Screen lock protection function. 6.Press the RESET to restore the screen for one second, and restore the factory settings. 7.Memory function after power off. Technical parameters: Voltage 110V~230V AC 50Hz/60Hz EU FR Plug:16(2)A 230V-Max .3680W.u UK Plug:13(2)A 230V-Max .2900W.u US Plug:15(2)A 120V-Max .1800W.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 > Stop temperature Heating mode, start temperature < stop temperature 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