Kidde PI2000CA - Manual (Page 18)

Maintenance
17
Alarm Removal
If the smoke alarm tamper resist feature has been activated, refer
to the alarm tamper-resist feature section for removal instructions.
To remove the alarm from the mounting plate, rotate the alarm
in the direction of the “OFF” arrow on the cover. To
disconnect the AC power harness, squeeze the locking arms
on the sides of the Quick Connector while pulling the
connector away from the bottom of the alarm.
Battery Replacement
To replace or install the batteries you must first remove the
alarm from the mounting plate by following the ALARM
REMOVAL instructions at the beginning of this section. After the
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.
This smoke alarm uses a 9 V alkaline battery (a lithium battery
may also be used). A fresh alkaline battery should last for one
year under normal operating conditions. This alarm has a low
battery monitor circuit which will cause the alarm to “chirp”
approximately every 45 seconds for a minimum of 7 days when
the battery loses power. Replace when this condition occurs.
Use only the following 9 V batteries for replacement:
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
After installing or changing the battery, reinstall your alarm.Test
your alarm by using the test button and check that the green
LED is on.