Kidde KN-OOSM-IB User Manual

• Voice Message System that alerts user to the following condi-

tions:

– System announces “HUSH MODE ACTIVATED” when 

the unit is first put into HUSH Mode.

– System announces “HUSH MODE CANCELLED” when 

unit resumes normal operation after Hush Mode has 
been cancelled. 

– System announces “CARBON MONOXIDE PREVIOUSLY 

DETECTED” when the unit has detected CO 
concentrations of 100 ppm or higher.

– System announces “PUSH TEST BUTTON” when the unit 

is powered up, reminding user to activate the Test 
Button.

• One “chirp” every 30 seconds is an indication that the alarm

is malfunctioning. If this occurs call the Consumer Hotline at
1-800-880-6788.   

• Test/Reset button performs the following functions:

– Tests the units electronics and verifies proper unit 

operation

– Resets the unit during CO alarm

– Activates HUSH Feature

– Activates Peak Level Memory Feature

• HUSH Control Feature that silences the unit during nuisance

alarm situations (see page 15).

• Peak Level Memory Feature which alerts user when the unit

has detected CO concentrations of 100 ppm or greater (see
page 16).

• Alarm Memory Feature that gives visual indication when an

alarm has sensed a hazardous condition.

• Green and red LED lights that indicate normal operation and 

alarm status (see page 17 for details).

• Tamper Resist Feature that deters children and others from

removing the alarm (see page 17).

• Model KN-COSM-IB is equipped with a battery reminder flag

that prohibits installation when battery is not present.