... ,terminals,led ,green mask tail,3M468 back adhesive etc.Membrane switch advantages:1. Beautiful appearance, rich and bright in colo, design ... contaminant resistant for a moisture-proof, dust proof, waterproof, anti-oil and anti-corrosion product. As well it is protected against the ... are lowest ,the life expectancy of different types of membrane switch is more than 100 million times.6.Easy to operate ...