1. The transparent film covering the front and back of the membrane switch is the display window of the protective membrane switch. Do not tear it off;
2. The feel, the large number of film surface stickers, and membrane switches all need to be vertically placed to prevent the key from prolonged heavy pressure failure;
3. The outlet of the membrane switch must be well protected and cannot be placed with the outlet facing downwards;
4. Membrane switches with a display window must prevent bending of the material when it is held and placed, leaving creases;
5. Membrane switches are stored indoors at room temperature. They should be protected against dust and moisture. There is no acid, alkaline or other corrosive gas in the surrounding air.