1. First open the bottom cover of the pressure cooker, find the pressure switch, solder off the two terminal wires, remove the old pressure switch, and then install the new pressure switch.

2. Next, replace the pressure cooker temperature sensor. There is a screw on the back panel of the pot lid. Just use professional tools to remove the screw.

3. Finally install it, tighten the screws and other safety measures, and buckle the pot lid back.