User's Manual
Battery Installation/Replacement (continued)
Battery Replacement/Installation Instructions
To install or replace the batteries in your Kidde unit please per-
form the following steps:
1. Gently flip open 
the lower half of 
the front cover to 
expose the battery 
compartment.
2. Remove the old 
batteries and properly 
dispose of them as 
recommended by the 
battery manufacturer
(see figure 10).
3. Reinstall the new batteries, being careful to seat 
the red battery warning flags in the recess of the 
battery well. Also, note the polarity illustration in 
the bottom of the battery compartment. If applicable, the
unit will chirp and display for approximately one 
minute and return to normal operation. 
4. Gently close the bottom cover. The bottom cover of 
your CO alarm will NOT close if all three AA 
batteries are not properly installed. 
CARBON MONOXIDE ALARM
TEST
RESET
Operate Alarm
MOVE TO
FRESH AIR
Figure 10
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