Built-in high resolution analog NTSC color video camera with wide viewing angle, tilt/swivel adjustments and wide operating temperature: -40 F to 140 F 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: PRXC, PRX-C-ISO, PRX-FOB and LRT-4 (DOD# 198 & 226) 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. Selfdraining 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 Postal lock input