Built-in 125KHz 26-bit Wiegand proximity card reader with LED, beep card read confirmation, and EWP board protection Compatible with the following Viking Proximity Cards and Fobs: PRX-C, PRX-C-ISO and PRX-FOB (DOD# 198) Vandal Resistant Features: 14 gauge louvered 316 stainless steel faceplate with permanent laser etched graphics, heavy duty metal keypad and T-10 Torx Security mounting screws. Weather Resistant Features: Marine grade 316 stainless steel faceplate and screws. Internally sealed keypad. Mylar speaker. Self-draining mic mount. Faceplate, keypad, mic and speaker gaskets. Designed to meet IP66 Ingress Protection Rating (see DOD 859) Operates on 12 to 24 volts AC/DC 12 speed dial buttons (22 digits each) 12 alternate number positions (22 digits each) One button operation (no call button) Hang up on CPC, busy, silence, time-out or dial tone Touch tone restriction from microphone Integral relays for camera control and door strike Works with C-1000B for increased security Works with C-3000 for "No CO" (phone line) operation 50 keyless entry codes See model K-1205 for integral camera Postal lock input