![background image](http://html.mh-extra.com/html/kidde/kn-cosm-b-rf-ca/kn-cosm-b-rf-ca_user-manual_1965307016.webp)
16
1st
2nd
3rd
Installing Batteries
Batteries were not installed at the factory and must be installed for
the unit to operate.
Install the three AA batteries in the back of the smoke/CO alarm.
• Open battery door by lifting up on the lip at the bottom edge of
the alarm.
• The battery polarity markings on the bottom of the battery
compartment must be adhered to.
• Batteries must be installed in the sequence shown above.
If batteries seem difficult to install, they’re not being installed in
the proper sequence.
• The Smoke/CO alarm will not engage the attachment stud (see
page 22) unless all three batteries are installed and the battery
door is closed. Removal of any or all batteries will render the
smoke/CO alarm inoperative!
• After the batteries are correctly installed the unit will beep once,
the red LED will flash, “Push Test Button” will be played. The
green LED will flash immediately after power is applied, and then
will flash every 30 seconds to display normal operation.
CAUTION: Your smoke/CO alarm is sealed and the cover is
NOT removable!
Battery Door Closed
Battery Door Open