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INSTALLATION GUIDE - REMOTE ACCESS CONTROLLER RAC 4XT • PK3191_10_14
2.2  Components
2.2.1 Controller box
(A)   RAC 4XT Enclosure & Access Door: 
holds the controller board (PCB), 
power supply, relay expansion board 
(optional), and battery back-up 
(optional). Knockouts are available 
on 3 sides for routing of peripheral 
cables.
(B)  Power Supply: provides the DC 
power required for operation of the 
controller PCB and all peripherals.
(C)  Controller Board (PCB): controls all 
the features of the RAC 4XT system.
(D)   Tamper Switch: attached to the RAC 
4XT enclosure to generate an alarm if 
the box is opened during operation.
(E)  Power & Battery Status LEDs: 
provides visual indication of the 
operational status of the RAC 4XT 
system. Battery status LED is only 
used on battery back-up equipped 
systems.
(F)   Cam-lock with Key: to provide secure 
locking and to control access to the 
RAC 4XT enclosure.
Optional components:
(G)  Battery Back-up: 12 VDC battery 
providing up to 4 hours of operation 
in the event of a power failure.
(H)  Relay Expansion Board: interface 
board providing 8 relay outputs 
that can be used to control relay-
equipped equipment. As example, it 
can be used with an elevator to call 
the elevator or to provide access only 
to specific floors for certain guests or 
staffs.
Not shown:
(I)  Cables: cables required for 
connections of the LEDs, power 
supply and controller PCB. If 
equipped, will also include cable for 
connection of battery back-up and / 
or relay expansion board.
2.0  Product Description
Front Desk
Non-Secure Side
Secure Side
Remote Unlock
Fire Alarm
Ingress
Reader
Egress
Reader
Battery
12V
RAC 4XT
+
Power Status
PULL
FIRE
Battery Status
-
Request
to Exit
Power
Adaptor
Programming
(M-Unit)
Programming
(FDU)
Locking
Device
Figure 2
B
A
D
C
HGEF
Figure 3