Specifications

Alto 818 Installation and Operation
2-34 P/N 66109074001 Rev. D
2.13.2 TWO-READER CONTROL
The two-reader system shown in Figure 2-16 can perform functions in addition to door access.
Entry is controlled by a reader on a sensor port; access can be controlled and key holder location
may be recorded. The exit reader, also on a sensor port, may be used to record key holder exit,
enable anti-passback control, act as a request-to-exit signal and to initiate a door unlock. In the
two-reader configuration, the REX switch used for the one-door system is replaced by an exit
reader. .
CAUTION:
Building exits which required valid access to unlock must be equipped with a device
for emergency exit.
Figure 2-16: Example of Two-Reader Door Control Configuration