Specifications

Alto 818 Installation and Operation
1-8 P/N 66109074001 Rev. D
Table 1-3: Privileged/Non-Privileged Access
Re ad er Type
Building
Mode
Norma l Open Closed Station
Privileged Card
with Valid
Access Code
OPEN
4444
LIMITED
4844
CLOSED
4844
Non-Priv ileg ed d
Card with Valid
Access Code
OPEN
4444
LIMITED
488 8
CLOSED
488 8
4 Access Granted 8 Access denied
1.3.5 DOOR CONTROL
A number of devices may be used to control access through a door. A brief discussion of some
of these follows.
DOOR LOCKS
A variety of door locks activated by electrical current can be interfaced to the Alto 818 relay outputs.
Locks may be magnetic or solenoid triggered. Consideration should be given to whether a fail-safe
(unlock on power loss) or fail-secure (lock on power loss) device is installed. Fail-secure locks
may use mechanical override devices, such as a crashbar, for exiting if electrical power is lost.
In such circumstances, doors must allow safe exit as well as entrance by emergency personnel
as required.