... appliance. ours is based on high quality and competitive price Keyboard SwitchMembrane switches is a type of keypad, which can ... began early 1980.1)Items——membrane switch, keypad, membrane keypad, keyboard switch, switch panel, membrane panel, membrane overlay, membrane faceplate for ... ~ +80°Cl) Storage temperature—— -40°C ~ +85°Cm) Humidity——90% - 95% (40°C) for 240hrs9)Thickness——between 0.9mm-2mm 10 ...