1.Structure:made by PCB,metal dome,LED,overlayer 2.used for meter 3 with special conector 4.more than 1000,000 times 1.Structure:made by PCB,metal dome,LED,overlayer 2.used for meter 3 with special conector 4.life :100000 to 1000000 times- 5.The-PCB-thickness is 1.6 mm,goldish FR4 board - Some parameters of membrane switch, membrane keypad, PCB membrane switch keypad - Conact resistance: 0.5~10Ω Insulation resistance: ≥100MΩ Material anti-pressure: 2kDVC Springback time: <6ms