... host, USB-client, 8 functions keys, T9 input method, backup battery and has access control connectivity for Wigand-in, Wigand-out, ... 's photo display and make T&A application more visible and reliable. 2. Time & Attendance Built-in backup battery protects data. ... Query, Automatic Status Switch, T9 input, photo-ID, Web server, Camera, built-in batteryAccess Control Interface forLock, door sensor, ...