Philips Xinhao balcony switch socket panel fell off and could not be installed. What should I do?

You can first check whether the fixed controls on both sides of the junction box are loose or misplaced, and replace them if there is any problem. Then check whether the mounting screw of the socket switch slips, and slowly screw it into the junction box with a long cross-hole screwdriver against the fixing bolt. Be careful not to tighten it too tightly, and then tighten it after the left and right are installed. Thank you for your adoption ~