This proximity card reader is designed for outdoor placement. It has vandal-resistant design features and many extra features 5 LED indicators Audio indicator Metal case TTL serial output Built-in watchdog to prevent halting. WG port support for anti-pass-back 1024 users, 1200 event logs 2 sets of auto-open zone editing in stand-alone . 3 control modes for selecting, M4, M6 and M8. 3 access modes: card only, card or pin, card and pin 11 sets of time zone for various accessing. Software support for networking and time-attendance. Easily integrated with other Eclipse access control systems.