Membrane Switch 1. Material: PET or PC 2. Type: metal dome tactile 3. Durable, Scratch resistant 4. Passed ISO9001,ROHS ... 3M 468MP, etc.3. Standard Tolerances: +/-.010 inch.4. Matching color: Pantone and RAL color matching system.5. ... -10oz),tactile type :150-400g(6-14oz)7. Switch stroke:flat type : 0.1-0.5mm,tactile type ... medical machine, scientific and technological spaceflight ,etc. membrane switch