... -defined function keys, the left one is for door belling, the right one is for shift of identification mode. Infra-red optical ... 0 algorithm).Professional access control compatible with the 3rd party door sensor, alarm, exit button, wired bell and electric lock ... /485, USB HostAccess Control Interfaces:for3rd party electric lock, door sensor, alarm, wired bell and exit buttonWiegand Signal:Wiegand in ...