Features and functions:

1. Alarm function
   If unauthorized cards read, optical turnstile will alarm. This can prevent unauthorized people from getting in while this can also prevent people inside from going outside without permission.
   2. Bi-direction and direction auto-realization
   Each passage can be used for going in and out. When anyone passing, optical turnstile will recoginze the direction.
   3. One card read, one passegner passing
   One card read and one passenger passing to avoid one passenger passing with two cards read.
   4. Quick Passing
   During peak time of on-work and off-work, auto-card-reading with two passages allows 150 times passing and card-punch-reading with two passages allows 120 times passing.
   5. Real-time Data Management
   Auto statistics, save real-time card reading records for time attendance management.