... robust metal casing, and possess the ability of water-proof, dust-proof, corrosion-proof and explosion-proof, etc.( Support RFID card ... Ring>= 70 dB(A)( Structural Housing MaterialPowder coated die-cast aluminum alloyLCD4 - line, 128 X 64 pixels, backlight supported (8 - line ... 4,000 N Outdoor smart card/RFID card payphone for wall mounted (Guanri W811 )