Temperature control socket

Instructions
Set the starting temperature:
Press--up button again to display the starting temperature, long press the up button for about 3 seconds, the starting temperature number flashes,
The required temperature can be set by the up and down keys
Set stop temperature:
Press the down button once to display the stop temperature, press and hold the button for about 3 seconds to stop the temperature flashing,
The required temperature can be set by the up and down keys
How to restore factory settings:
When the power is on, press and hold the up and down keys at the same time, the digital tube displays 888 and then automatically jumps to detection
The temperature is restored to factory settings.