Wiring connections – Napco Security Technologies GEM-P1664 User Manual
Page 12

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GEM-P1664 Installation Instructions
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NAPCO Security Systems
WI1424A 1/06
Page 12
WIRING CONNECTIONS
BATTERY
The RED (+) and BLACK (-) flying leads must be connected 
to a 12VDC 4-7 AH Rechargeable Battery, to serve as 
backup power in the event of AC Power Failure. NOTE: To 
calculate the available standby time refer to the Standby-
Battery Calculation Worksheet at the back of this manual. 
TRANSFORMER
(The following applies to installations in the United States of America): Connect 
a 16.5 VAC Transformer to Terminals 1 and 2, using a wire of #18 AWG. or 
larger at a distance of 15 ft. or less from the control panel. NOTE: Do not 
connect to a switched outlet.
Connect the alarm sounding devices (self-contained sirens, 
speakers or a mechanical bell) to Terminals 3 and 4. Any self-
contained siren requiring a 12 VDC input can be connected. 
When connecting a mechanical bell, it must be supervised 
using a 2.2k Ohm resistor. To connect 8 Ohm Speakers use a 
Siren Driver with the proper polarity observed. NOTE: Refer to 
the GEM-P1664 Wiring Diagram for alarm current 
specification. Note: In NFPA Household Fire Installations. 
only a single siren or bell can be used on this bell circuit.
SIREN/BELL POWER
AUXILIARY POWER
Connect the auxiliary devices (motion detectors, glass breaks, etc.) to Terminals 5 
and 6. Auxiliary Power provides 11.7-12.5 VDC nominal output which is used for 
powering auxiliary devices. NOTE: To calculate the available standby time refer to 
the Standby-Battery Calculation Worksheet at the back of this manual.
PGM OUTPUTS (PGM1 & PGM2)
PGM1 and PGM2 are negative switched 
programmable outputs that can be activated 
depending on the programming options 
selected (see GEM-P1664 Programming 
Instructions). Connect the device controlled by 
the programmable output between terminal 5 
(+) and the PGM output (-), either terminal 7 or 
8. As an example, the connection to the 
RB1000 Relay Module is shown. 
7
Wiring Connections: Batter
y,
Tra
n
sformer, Siren
Pow
er,
A
u
x. Po
w
er &
PG
M Ou
tpu
ts
