The corner guard is for controlling door access, when one punch ... door will be open according to signal. The Fingerprint Corner GuardThe corner guard is for controlling door access, when one punch ... , install very easilyThe capacity of connecting net: 31 units (RS485 mode), 542 units (TCP/IP)Distance: 1200m (RS485)Show: time, ... Proximity or Mifare card reader, battery and USB Fingerprint Corner Guard