5. NUISANCE ALARMS
Smoke alarms are designed to minimize nuisance alarms.  
Cigarette smoke will not normally set off the alarm, unless the 
smoke is blown directly into the alarm.  Combustion particles from 
cooking may set off the alarm if the alarm is located close to the 
cooking area.  Large quantities of combustible particles are gener-
ated from spills or when broiling.  Using the fan on a range hood 
which vents to the outside (non-recirculating type) will also help 
remove these combustible products from the kitchen.
If the alarm does sound, check for fires first.  If a fire is discovered, 
get out and call the fire department.  If no fire is present, check 
to see if one of the reasons listed in section 2 may have caused 
the alarm. The Model P12040 has a “HUSH” control that is 
extremely useful in a kitchen area or other areas prone to nuisance 
alarms. For more information refer to section 4, OPERATION AND 
TESTING.
6. MAINTENANCE
IF TAMPER RESIST PIN HAS BEEN USED, REFER TO TAMPER 
RESIST LOCKING PIN IN SECTION 3 FOR PIN REMOVAL 
INSTRUCTIONS.
To replace the battery, remove the alarm from the trim ring by 
rotating the alarm in the direction of the “OFF” arrow on the 
cover (see Section 3, Figure 7) To disconnect the A.C. power 
harness, squeeze the locking arms on the sides of the Quick con-
nector while pulling the connector away from the bottom of the 
alarm (see Section 3, Figure 6).
BATTERY INSTALLATION AND REMOVAL
To replace or install the batteries, you must first remove the alarm 
from the trim ring by following the ALARM REMOVAL instructions 
at the beginning of this section. After alarm has been removed, 
you can open the battery door and install or replace the battery. 
Battery installation instructions are provided on the inside of the 
battery door.
FIGURE 9
1375-7213-00(21008164-EN A).indd   101375-7213-00(21008164-EN A).indd   10 2010.10.7   2:06:25 PM2010.10.7   2:06:25 PM