NAPCO GEM-SMK Installation Instructions
Description. The GEM-SMK is a high-quality photoelec-
tric smoke detector with built-in supervised digitally-coded
radio transmitter. It is compatible with Napco’s GEM-
RECV Series supervised security receivers that monitor
alarms, restores, low battery and status.
The GEM-SMK sounds a local alarm as soon as smoke is
detected and the transmitter will send an alarm signal to
the supervised receiver. The alarm signal will be repeated
every 10 seconds thereafter as long as smoke is still pre-
sent. A restore report will be sent when the smoke detec-
tion chamber clears. Supervisory status reports are sent
from the GEM-SMK every hour.
Coding switches are not required or used in the GEM-
SMK. Each transmitter is assigned a unique identification
code number at the factory.
REMOVE MOUNTING
PLATE
Step 1. Remove the mounting plate. Remove the
GEM-SMK mounting plate by turning the plate
counter-clockwise and pulling it up.
TWIST
MOUNTING
PLATE TO
UNLOCK
Step 3. Install batteries. Connect the two 9-
volt alkaline batteries and place them into
the battery holding clips.
CONNECT AND
INSTALL TWO 9-
VOLT ALKALINE
BATTERIES
Step 2. Identify components. Examine the GEM-
SMK to identify the component locations.
TRANSMITTER
BOARD
BATTERY
HOLDING
CLIPS
R
333 Bayview Avenue
Amityville, New York 11701
For Sales and Repairs, (800) 645-9445
For Technical Service, (800) 645-9440
Publicly traded on NASDAQ Symbol: NSSC
© NAPCO 2005
GEM-SMK
SUPERVISED
DIGITAL SMOKE DETECTOR
INSTALLATION INSTRUCTIONS
WI750B 2/05
The smoke detector and transmitter are powered by two
9-volt alkaline batteries (supplied) which can power the
unit for up to two years. If the battery voltage drops be-
low normal, a low-battery report will be sent to the re-
ceiver with any status or alarm transmission. If a low-
battery condition is indicated, replace both batteries.
NOTE: Temperature and humidity extremes may reduce
the life of the battery.
continued