Altronix AL175UL Installation Instructions - Manual (Page 3)

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Terminal Identification:
Terminal Function/Description
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TRG1 & TRG2 These input terminals are designed to connect to the normally closed
outputs of an access control or fire alarm relay. These terminals control [LOCK+],
and [STRIKE+], as well as AL175UL output relay contacts [N.C., N.O., C]
LOCK+ This terminal provides DC output voltage when [TRG1] and [TRG2] are shorted
together and are typically used to power Mag Locks.
STRIKE+ This terminal provides DC output voltage when [TRG1] and [TRG2] are unshorted
and are typically used to power Electric Strikes.
N.C., N.O., C Isolated dry Form “C” contacts. Shorting [TRG1] and [TRG2] together causes these contacts to
switch. They are typically used for controlling multiple AL175ULXs with fire alarm tie-in
(Fig. 5 and Fig. 6, pg. 4).
AUX + Continuous positive (+) DC power output voltage. It is not affected by TRG1, TRG2 operation.
COM - Common negative (-) output (ground).
FACP Spare wiring terminal used for fire alarm tie-in application (Fig. 4, pg. 4).
+ BAT - Stand-by battery connections.
AC FAIL Used to notify loss of AC e.g connect audible device or alarm panel. Relay normally energized
N.C., C, N.O. when AC power is present. Contact rating 1 amp @ 28VDC.
Enclosure Dimensions:
8.5”H x 7.5”W x 3.5”D
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