Battery Replacement
Models i12040ACA and P12040CA
These alarms have a low/missing battery monitor circuit which will cause 
the alarm to “chirp” approximately every 30-40 seconds for a minimum 
of seven (7) days when the battery gets low. Replace the battery when 
this condition occurs.
Models i12040ACA and P12040CA use a 9 V carbon zinc battery 
(alkaline and lithium batteries may also be used). A fresh battery should 
last for one year under normal operating conditions. 
Use only the following 9 volt batteries for replacement:
Carbon-Zinc Type  Eveready 1222
    Gold Peak 1604P or 1604S 
Alkaline Type  Energizer 522
    Duracell MN1604 or MX1604 
    Gold Peak 1604A
     Panasonic 6AM6, 6AM-6, 6AM-6PI,      
6AM6X and 6LR61 (GA)
Lithium Type  Ultralife U9VL-J
These batteries can be purchased at your local retailer. 
WARNING! Use only the batteries specified above. Use of different 
batteries than the recommended ones, may have a detrimental effect 
on the smoke alarm. A good safety measure is to replace the battery at 
least once a year, or at the same time you change your clocks for daylight 
saving time. Be sure to follow the battery installation instructions printed 
on the back of the alarm.
SMOKE SENSING CHAMBER OPERATION: THIS ALARM WILL “CHIRP” IF 
ABNORMAL OPERATION OF THE SMOKE-SENSING CHAMBER IS DETECTED. 
THIS CHIRP WILL OCCUR APPROXIMATELY 20 SECONDS AFTER THE RED 
LED FLASH. REPLACE THE ALARM IF THIS CONDITION OCCURS.
NOTE: WEEKLY TESTING IS REQUIRED!
4. Maintenance