Kidde 9CO5-LP User Manual
Battery operated carbon monoxide alarm, Description, Consumer benefits
Battery Operated
Carbon Monoxide Alarm
Part Number 21008905
Model 9CO5-LP
Description
The Kidde 9CO5 battery operated carbon monoxide alarm 
utilizes sophisticated electronic components to protect you 
and your family from the dangers of carbon monoxide. 
This alarm includes a slide-out battery door that gives 
immediate access to the batteries and a safety feature that 
makes it difficult to close the door without the batteries 
being installed. Inside cover of battery door features quick 
reference guide for what to do in case of an alarm. This 
easy-to-install alarm is suitable for all living areas and has 
a 7-year life and a 5-year limited warranty.
Consumer Benefits
The Kidde 9CO5 provides you and your family with a 
loud warning signal against the dangers of elevated 
carbon monoxide levels in your home. The battery 
operated CO alarm provides continuous monitoring 
of CO levels, even during power outages when AC- 
only units are not providing protection. 
Features and Benefits
•	 Battery	Operated	(3AA’s	included) – Provides 
 protection during power outage.
•	 Battery	Lockout	System – Deters covering battery 
 compartment without installation of batteries.
•	 Slide-out	Battery	Door	Cover – Gives immediate 
 access to batteries.
•	 Test/Reset	Button
 – Tests the unit for proper operation
 – Resets the Carbon Monoxide Alarm
•	 Low	Battery	Signal – Alerts user when the battery 
 needs to be replaced.
•	 Green	LED	– Flashes every 30 seconds to indicate the unit 
 is operating properly. The green LED will also flash before a 
 CO reading is taken and when any button is pressed.
•	 Red	LED – When a dangerous level of carbon monoxide is 
 detected the red LED will pulse and a loud alarm pattern 
 will sound. The carbon monoxide alarm pattern is 4 short 
 beeps, followed by 5 seconds of silence, followed by 4 
 short beeps with a corresponding red LED flash. This 
 cycle will continue for 4 minutes and then change to 
 1 cycle every minute until the device is reset or the 
 CO is eliminated.
Alerts user to replace
CO alarm after 7 years
NEW
FEATURE:
Alerts user to replace CO alarm
after 7 years of operation
NEW
FEATURE:
UL
SIGNALING
LISTED
Battery Operated (3AA’s included)
Provides protection during power outage.
Green Alarm LED
Red Power LED
Test/Reset
Tests CO alarm circuit operation and allows you to
immediately silence the alarm.