1)backlit keypad 2)metal keypad 3)telephone keypad 4)chrome keypad used in access control Main features1)Highly antidestructive power,2)Force 160-180 grams, nimble dial-up3)Contact resistance<100 Ω4)Service life≥ 500 thousand5)Ambient temperature  -20~+50 °C6)Relative humidity ≤95%7)Atmospheric pressure 80~106kPa8)Defend grade  IP65~IP679)LED backlitMain components1)alloy chrome-plasted button and framework2)Natural sillcone electroconductive rubber3)Epoxy resin gilding PCBUsers choice1)Button chrome-plasted colors: polished or sandblasted chrome.2)Zinc alloy – plasted of the framework’s colors: polished or sandblasted chrome3)Other usage keyboard is available besides using for telephone.Package 1)Carton size 420*340*115mm2)20Ft Qty 1640ctn (80pcs/ctn)