Camden CV-550SPK stand-alone, HID format prox reader and keypad, supports up to 2000 users with card, PIN, or card and PIN access. It features a cast metal housing and backlit keypad with fully potted electronics, making CV-550SPK both weather (IP 65 rated) and vandal resistant. In addition, the CV-550SPK has inputs for REX switch/sensor, door contacts, as well as a Form 'C' relay, tamper, and Wiegand 26 bit input and output. User cards or tags can easily be individually or batch enrolled.Main Features:? Up to 2,000 users - cards or tags? Batch card/tag enrollment? Cast metal, heavy duty construction? Backlit vandal resistant keypad? Weather resistant IP65 rated? Supports card, PIN, card + PIN (HID 26,37 bit format)? 4 to 8 digit PIN code length? (1) Form 'C' relay output? Tamper alarm output? Request to exit device input