prox.pad Plus IR Access System Installer Guide
Wiring an External REX Switch (Request to Exit)
The prox.pad Plus IR unit can be wired to monitor a remote switching device, which is intended to be installed on the secure side of a
door. The Request to Exit (REX) switch is a momentary input closure that engages the main relay for the same length of time for
which the main relay is programmed. This feature can be stored in the Transaction Log for viewing.
If you elect to perform a secure installation where the controller is mounted on the secure side of the door, you can use the filler piece
as a REX switch. For other installations, a separate REX switch must be purchased.
Other REX devices can be used to include a remote button placed at a receptionist’s desk, a press-to-exit switch on the inside of a
door, or a passive infrared detector, allowing free and convenient egress. The REX feature requires no programming; simply wire the
unit as illustrated in the figure below. To incorporate this feature, follow these steps:
1. Turn OFF power to the prox.pad Plus IR unit, and then unlatch the keypad from the plastic housing.
2. Locate connector P2 on the main circuit board.
3. Plug the 6-conductor harness into connector P2. (The 2-pin jumper on pins 5 and 6 of connector P2 must be removed first.)
4.
If you do not wish to install the door contacts
, twist the white wire and the orange wires together; this is mandatory. If this
is not done, the REX input will not function.
NOTE:
The door contact
MUST
be closed for the REX feature to work properly.
Document # 6105681, Rev 1.1, D2a Page 25 of 32
Figure 16: Wiring the REX Switch
Use
ALPHA 2421C 18 AWG or ALPHA 1292C 22 AWG, 2-conductor, stranded and
shielded cable. The cable shield drain wire must be grounded at the reader end to
P1, pin 4 connection (DC Power Supply Ground).
