Kidde KN-COB-B-LS Leaflet

The Nighthawk 900-0233 battery operated carbon 
monoxide alarm is an easy to install unit that provides 
reliable protection against the dangers of carbon  
monoxide.  Written information and instruction make 
this unit’s operation easy for anyone to understand.  
The Nighthawk DC Basic alarm has a small, sleek design  
that is suitable for all living areas and has a 7-year  
limited warranty.  

The Nighthawk 900-0233 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. The 
Nighthawk CO alarm has a 7-year product life, provid-
ing 40% longer protection than other CO alarms. The 
battery operated CO alarm includes multiple mounting 
options allowing installation on a wall or tabletop.

• Battery Operated (3AA’s included) – Provides 

protection during power outages.

• 9V Battery Backup – Provides continuous protection 

even during power outages.

• Test/Reset Button – Tests the unit for proper  

operation.  Resets the Carbon Monoxide alarm.

• 7-Year End of Life Warning – Alerts user to replace 

CO alarm after 7-years of operation.  (40% longer 
than other CO alarms)

• UL Listed – Lifelong Warranty

Provides protection during power outage.

Red – Illuminates when in alarm mode. 
Green – DC power is present, normal operation.

Tests CO alarm circuit operation and allows  
you to immediately silence the alarm.

End of Life Alarm 

Alerts user to replace CO alarm after  
7-years of operation.