3×4 12 keys waterproof industrial access control zinc alloy digital metal keypad B518

The key frame uses special zinc alloy material and button color is bright chrome or matte chrome plating.It is mainly for access control system, industrial telephone, vending machine, security system and some other public facilities.


  • warranty: 1year
  • layout: 3x4
  • color: natural
  • material: zinc alloy
  • Input Voltage: 3.3V/5V
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