... good tactility, abrasion resistant, installation and connection convenience. 4. Tightness is good, moisture-proof, dust-proof, waterproof, anti-oil, anti- ... lowest, the life expectancy of different types of membrane switch is more than 100 million times. 6. Easy to operate, intuitive, ... c 90 % ~ 95% 240 hourOperation Forceflat type 57-284g (2-10 Oz), tactile type 170-397g (6-14 Oz)Switch strokeflat ...