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Battery Backup
Models 1275CA and PE120CA with battery backup will
not function without a properly installed battery. They are
equipped with a battery lockout feature which prevents
the battery door from closing if a battery is not installed
correctly. See Maintenance section for additional
information concerning battery installation.
Testing
• To ensure proper operation of models 1275CA and
PE120CA with battery backup, press the Test button
(without the AC power connected). All interconnected,
battery backed-up alarms, should respond.
CAUTION: Due to the loudness (85 decibels) of the alarm, always
stand an arms-length away from the unit when testing.
• Tu rn on the AC power. The green LED power indicator
should be lit when the alarm is operating from AC power.
• For all models: C o n f i rm unit operation by pressing the
Test button again.
The smoke alarm is operating once AC power is applied, a
f resh battery is installed (only for battery backup models
1275CA and PE120CA) and testing is complete. When the
smoke alarm ionization sensor chamber senses products of
combustion, the horn will sound a loud (85db) alarm until
the sensing chamber is cleared of smoke particles.
Alarm Tamper Resist Feature
• To make the smoke alarm tamper-resistant, a locking
pin has been provided in the bag with the screws and
anchors. Using this pin will deter children and others
from removing the alarm from the mounting plate. To
use the pin, insert it into the hole in the side of the
alarm after the alarm has been installed on the
mounting plate (Image 4D).
NOTE: The tamper-resistant pin will have to be removed in
order to change the battery (models 1275CA and PE120CA).
Use long nose pliers to pull the pin out of the hole. It is now
possible to remove the alarm from the mounting plate.
Mounting
CAUTION: This unit is sealed. The cover is not removable!
• Pull the AC Quick-Connect wire harness through the centre
hole in the mounting plate and secure the plate, making
s u r e that the mounting screws are positioned in the small
ends of the keyholes before tightening (Image 4A).
• (For models 1275CA and PE120CA) Press the battery
reminder tab down into the battery compartment while
inserting the battery (Image 4C).
CAUTION: If the battery reminder tab is not held down in the
battery compartment by the battery, the battery door will not
close and the unit will not attach to the mounting plate.
• Plug the AC Quick-Connect wire harness into the back
of the alarm (Image 5), making sure that the locks on
the connector snap into place. Push the excess wire
back into the electrical box through the hole in the
center of the mounting plate.
• Alignment marks are provided on the edge of the
mounting plate and the alarm. After installing the
mounting plate, place the alarm onto the mounting plate,
making sure the alignment marks are lined up. Twist the
alarm in the direction indicated by the “ON” arrow on
the alarm cover (Image 4B) until it locks in place.
I n s t a l l a t i o n
I n s t a l l a t i o n
1211
ATTACHING THE AC QUICK-
CONNECT WIRE HARNESS
IMAGE 5
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