... Switch: 1,ISO9001:2008&ISO14001:2004 2,Graphic overlay:Polyester 3,Dome:embossed with Nickel or Metal Tactile membrane switch: 1 ... durable color, characters, logos and other panel contents without injury. 3. Small size, light weight, thin thickness, good tactility,abrasion ... 0.1-0.5mm, tactile type 0.6-1.5mm 3. Environmental parameters Operating Temperature: -40 oC- +80oC , Storage temperature: ...