This programmable thermostat can automatically control the switching of refrigeration and heating equipment, and has intelligent temperature control and intelligent timing functions. Mode selection Digital timer Press MODE, the LCD displays: temperature control mode; F01-F04 timing mode: F01 cycle timing mode, start time (ON) / end time (OFF) cycle timing; F02 countdown mode ON, now TI.S OFF, delay (start time) ON; F03 countdown mode off, now TI.SON, delay (stop time) off, countdown completed, turn off the output and exit the operation; F04 countdown starts countdown mode off, now TI.S OFF, delayed (start time) ON, start delay after (end time) OFF, end time to complete the countdown, turn off the output and exit the operation Temperature correction function Long press the power button, and the temperature will be calibrated in real time after 2 seconds. The real-time temperature calibration range is: -9.9~9.9C Press and hold the SET button for 5 seconds to automatically exit without saving the changes Press and hold the MODE button to exit and save the tooltip correction changes. Feature: Heating/Cooling Loop time and countdown Temperature correction Screen lock protection function Memory function: all current settings will be saved after power failure Restore factory settings Specifications: Maximum load: 16A (2) 3680W.u Temperature range: -40~120 Temperature control accuracy: 1% Timing accuracy: MAX10 minutes Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.