
GEM-CO-MOD
Carbon Monoxide
333 Bayview Avenue
Amityville, New York 11701
For Sales and Repairs, (800) 645-9445
For Technical Service, (800) 645-9440
(Note: Technical Service is for alarm professionals o nly)
Publicly traded on NASDAQ Symbol: NSSC
OVERVIEW
The GEM-CO-MOD Carbon Monoxide Cadence Module ena-
bles the bell output signal of the alarm system to conform to the
audible cadence required by the NFPA fo r carbon m onox ide (CO )
zones (4 pulse CO cadence ("beep, beep, beep, beep")).
The GEM-CO-MOD is suited for residential applications, and is
designed for 12VDC alarm system control panels.
SPECIFICATIONS
Power ................................... 12V nominal, operating voltage
Siren Output Power ........... As determined by your system,
Current Draw ...................... Standby: 8mA
Field Wiring ......................... Use 14-22 AWG
Operating Temperature ..... 0°C – 49°C
WIRE AND TERMINAL DESCRIPTIONS
Located at the bottom of the GEM-CO-MOD PC board, the 4
wires and 2 terminals are described as follows:
Red Wire (AUX +)
Positive auxiliary input power. Wire to the control panel "AUX
PWR" positive (+) terminal.
Black Wire (AUX –)
Negative auxiliary input power. Wire to the control pane l "AUX
PWR" negative (–) terminal.
Purple Wire (+ BELL IN)
Positive bell input. Wire to the control panel positive (+) bell
output terminal.
Yellow Wire (TRIG –)
CO active low control panel alarm output. Pr ogram to activate
upon a CO alarm.
+BELL OUT (terminal)
Wire to a listed audible sounding appliance. Note: Audible
sounding appliance must have an internal driver capable of a
steady output such as MG Electronics model MG 441-PDS.
– BELL OUT (terminal)
Wire to a listed audible sounding appliance. Note: Audible
sounding appliance must have an internal driver.
Cadence Module
© NAPCO 2015
range 13.6-10.5VDC
maximum 2A
WI2014.a 06/15
INSTALLATION
This device is designed to be connected to a UL Listed Burglary/
Fire Alarm Control Panel by a qualified security professional
trained in the installation and service of burglary and fire alarms
in accordance with local and national requirements. Mount the
GEM-CO-MOD inside the control panel housing as follows:
MOUNTING
Choose a mounting location within the control panel housing
and install using the screws provided. Mount as foll ows:
1. Open the GEM-CO-MOD case by inserting a sma ll screwdriver into the slot at the bottom of the Rear Cover and
twist (see Fig. 1).
2. A Mounting Plate is provided on the back of the GEM-COMOD Rear Cover. Remove the Mounting Plate from the
back of the GEM-CO-MOD by inserting a small screwdriver in the small opening in the Rear Cover and pushing in
the Retaining Tab (see Fig. 2), then slide the Mounting
Plate off the Rear Cover.
3. Use screws to secure the Mounting Plate to the inside of
the control panel housing using the holes indicated in Fig.
2.
4. With the Front Cover removed, slide the GEM-CO-MOD
onto the mounting plate. After the wiring (described b elow)
is completed, secure the Front Cover by placing the Front
Cover onto the two top tabs of the Rear Cover, then pressing the bottom of the Front Cover; the Front Cover will
snap on to the Rear Cover.
WIRING
Internal terminal block is intended for 14-22 AWG wires. Ensure
all terminal connections are secure.
Connect the Red, Black, Purple and Yellow wires to the control
panel terminals as shown in the following wiring diagram (see
Fig. 3) using wiring nuts or UL listed connectors suitable for the
application.
CO ZONE PROGRAMMING
Program the CO zone monitored by the control panel as detailed in the installation and programming instr uctions for the installed system.
GEM-CO-MOD (PC BOARD)
AUX
+
AUX
–
BELL
IN
+
COZ
+
RED
BLACK
PURPLE
YELLOW
Control Panel Motherboard
PANEL AUX
+ –
POWER
+ –
OUTPUT
BELL
Fig. 1.
Open the Case
MOUNTING
HOLES
RETAINING
TAB
MOUNTING PLATE REAR COVER FRONT COVER
INSERT
SCREWDRIVER
TO PUSH IN
RETAINING
TAB
WIRE
HOLE
GEM-CO Component Parts
Fig. 2.
OUT
EOLR
+ –
BELL
– +
– +
Figure 3: System Connections
Listed
Sounding
Appliance
PROGRAMMABLE
ACTIVE LOW
OUTPUT

NAPCO LIMITED WARRANTY
NAPCO SECURITY SYSTEMS, INC. (NAPCO) warrants its products
to be free from manufacturing defects in materials and workmanship
for thirty-six months following the date of manufacture. NAPCO will,
within said period, at its option, repair or replace any product failing to
operate correctly without charge to the original purchaser or user.
This warranty shall not apply to any equipment, or any part thereof,
which has been repaired by others, improperly installed, improperly
used, abused, altered, damaged, subjected to acts of God, or on
which any serial numbers have been altered, defaced or removed.
Seller will not be responsible for any dismantling or reinstallation
charges.
THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, WHICH
EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF.
THERE IS NO EXPRESS OR IMPLIED WARRANTY OF
MERCHANTABILITY OR A WARRANTY OF FITNESS FOR A
PARTICULAR PURPOSE. ADDITIONALLY, THIS WARRANTY IS IN
LIEU OF ALL OTHER OBLIGATIONS OR LIABILITIES ON THE
PART OF NAPCO.
Any action for breach of warranty, including but not limited to any
implied warranty of merchantability, must be brought within the six
months following the end of the warranty period. IN NO CASE SHALL
NAPCO BE LIABLE TO ANYONE FOR ANY CONSEQUENTIAL OR
INCIDENTAL DAMAGES FOR BREACH OF THIS OR ANY OTHER
WARRANTY, EXPRESS OR IMPLIED, EVEN IF THE LOSS OR
DAMAGE IS CAUSED BY THE SELLER'S OWN NEGLIGENCE OR
FAULT.
In case of defect, contact the security professional who installed and
maintains your security system. In order to exercise the warranty, the
product must be returned by the security professional, shipping costs
prepaid and insured to NAPCO. After repair or replacement, NAPCO
assumes the cost of returning products under warranty. NAPCO shall
have no obligation under this warranty, or otherwise, if the product
has been repaired by others, improperly installed, improperly used,
abused, altered, damaged, subjected to accident, nuisance, flood, fire
or acts of God, or on which any serial numbers have been altered,
defaced or removed. NAPCO will not be responsible for any
dismantling, reassembly or reinstallation charges.
This warranty contains the entire warranty. It is the sole warranty and
any prior agreements or representations, whether oral or written, are
either merged herein or are expressly cancelled. NAPCO neither
assumes, nor authorizes any other person purporting to act on its
behalf to modify, to change, or to assume for it, any other warranty or
liability concerning its products.
In no event shall NAPCO be liable for an amount in excess of
NAPCO's original selling price of the product, for any loss or damage,
whether direct, indirect, incidental, consequential, or otherwise arising
out of any failure of the product. Seller's warranty, as hereinabove set
forth, shall not be enlarged, diminished or affected by and no
obligation or liability shall arise or grow out of Seller's rendering of
technical advice or service in connection with Buyer's order of the
goods furnished hereunder.
NAPCO RECOMMENDS THAT THE ENTIRE SYSTEM BE
COMPLETELY TESTED WEEKLY.
Warning: Despite frequent testing, and due to, but not limited to, any
or all of the following; criminal tampering, electrical or communications
disruption, it is possible for the system to fail to perform as expected.
NAPCO does not represent that the product/system may not be
compromised or circumvented; or that the product or system will
prevent any personal injury or property loss by burglary, robbery, fire
or otherwise; nor that the product or system will in all cases provide
adequate warning or protection. A properly installed and maintained
alarm may only reduce risk of burglary, robbery, fire or otherwise but it
is not insurance or a guarantee that these events will not occur.
CONSEQUENTLY, SELLER SHALL HAVE NO LIABILITY FOR ANY
PERSONAL INJURY, PROPERTY DAMAGE, OR OTHER LOSS
BASED ON A CLAIM THE PRODUCT FAILED TO GIVE WARNING.
Therefore, the installer should in turn advise the consumer to take any
and all precautions for his or her safety including, but not limited to,
fleeing the premises and calling police or fire department, in order to
mitigate the possibilities of harm and/or damage.
NAPCO is not an insurer of either the property or safety of the user's
family or employees, and limits its liability for any loss or damage
including incidental or consequential damages to NAPCO's original
selling price of the product regardless of the cause of such loss or
damage.
Some states do not allow limitations on how long an implied warranty
lasts or do not allow the exclusion or limitation of incidental or
consequential damages, or differentiate in their treatment of
limitations of liability for ordinary or gross negligence, so the above
limitations or exclusions may not apply to you. This Warranty gives
you specific legal rights and you may also have other rights which
vary from state to state.
IMPORTANT WIRING METHODS
For single-conductor terminal
blocks (l ik e th e t yp e sh ow n at
left), to terminate more than one
conductor to a terminal, use the
wiring methods shown at right:
For "barrier" type terminal
blocks (like t he ty pe show n at
left), to terminate two conductors
to a terminal, use the wiring methods shown at right:
To terminate more than two conductors or
conductors of different wire sizes to a terminal,
use the "pigtail" type wiring method as shown at
right. Use insulated wire for the pigtail, and firmly
secure the conductors to the pigtail using an appropriate wire nut or crimp connector for the number and gauge of conductors used.
In
Incorrect
Incorrect
Incorrect
Out
WIRE NUT OR
CRIMP
In
Correct -- Single incoming and/or pigtail with wire nut / crimp connectors
Correct -- Separate incoming and outgoing conductors
PIGTAIL
Correct -- Use pigtail and wire nut / crimp connector
PIGTAIL
WIRE NUT OR
CRIMP
CONNECTOR
CONNECTOR
In Out
PIGTAIL