These CO Alarms have two separate locking features: one locks the battery compartment, and the other locks the CO Alarm to the mounting bracket. You can choose to use either feature independently, or use them both. Tools you will need: • Needle-nose pliers • Standard/Flathead screwdriver. Both locking features use locking pins, molded into the mounting bracket. Using needle nose pliers or a utility knife, remove one or both pins, depending on which locking features you use. USING THE OPTIONAL LO

If you are installing this CO Alarm for use by others, you must leave this manual—or a copy of it—with the end user. USER’S MANUAL AC POWERED CARBON MONOXIDE ALARM WITH BATTERY BACK-UP Model CO5120BN AC POWERED CARBON MONOXIDE ALARM WITH BATTERY BACK-UP AND DIGITAL DISPLAY Model CO5120PDBN 120VAC ~, 60Hz, 0.09A Models CO5120BN, CO5120PDBNM08-0002-000 Q 10/02 IMPORTANT! PLEASE READ CAREFULLY AND SAVE. This user’s manual contains important information about your CO Alarm’s operation. If you are in