1-membrane switch 2-durable, good click-feeling 3-passed ISO9001,ROHS, 4-customized design welcomed membrane switchSpecification:1.Best quality2.Best ... is good, moisture-proof, dust-proof, waterproof, anti-oil, anti-corrosion and erosion of harmful gases proof, acid and alkali proof ... 397g (6-14 Oz) Switch stroke: flat type 0.1-0.5mm, tactile type 0.6-1.5mm 3. Environmental parameters Operating ...