Membrane Switch 1. Material: PET or PC 2. Type: metal dome tactile ... type : 60-300g(2-10oz),tactile type :150-400g(6-14oz)7. Switch stroke:flat type : 0.1-0.5mm,tactile type ... :0.6-1.5mm8. Life expectancy:flat type : 5,000,000 ... , textile machine, medical machine, scientific and technological spaceflight ,etc. membrane switch