The unit needs to be tested weekly! If at anytime itdoes not perform as described, verify power is connect-ed correctly and that the battery doesn’t need replacing.Clean dust and other buildup off the unit. If it still does-n’t operate properly call the Consumer Hotline at 1-800-880-6788.Interconnect FeatureYour Combination Smoke/CO Alarm is interconnectableto other multiple station Kidde, Nighthawk andKidde/Fyrnetics products:• When compatible smoke alarms and heat alarms areinterconnected to your Smoke/CO Alarm, they willonly respond to a smoke related event.• When mixing compatible models with battery backupwith models without battery backup, be advised thatthe models without battery backup will not respondduring an AC power failure.• This unit is only approved to interconnect with otherKidde/Nighthawk products. It is NOT approved tointerconnect with any other brand of detectionproduct.• This alarm is interconnect compatible with thefollowing alarms and accessories:·Smoke alarms: 1235, 1275, 1276, 1285, PE120,PI2000, KN-COSM-IB·Heat alarm: HD135F·CO alarms: KN-COB-IC, KN-COP-IC·Relay modules: 120X, SM120X, CO120X·Strobe Light: SL177ISee User’s Guides for specific application information.• For more information about compatible interconnectunits and their functionality in an interconnectsystem, visit our web site at: www.KiddeUS.com.5. Install the alarm on the mounting bracket and rotatethe alarm in the direction of the “ON” arrow on thecover until the alarm ratchets into place (this ratchet-ing function allows for aesthetic alignment). Note:The alarm will mount to the bracket in 4 positions(every 90 degrees).6. Turn on the AC power. The green AC Power OnIndicator should be lit when the alarm is operatingfrom AC power.7. Two labels are included with your alarm. They haveimportant information on what to do in case of analarm. Add the phone number of your emergancyservice provider (fire department or 911) in thespace provided. Place one label next to the alarmafter it is mounted, and one label near a fresh airsource such as a door or window."8. For model KN-COSM-IB only: Pull the Battery Pull Tab(yellow tab protruding from unit) completely out ofunit. This will automatically connect the battery.Step 4Testing the AlarmCAUTION: Due to the loudness (85 decibels) ofthe alarm, always stand an arms length awayfrom the unit when testing.The test/reset button has four purposes. It tests theunit’s electronics, resets the CO alarm, activates theHUSH feature, and activates the Peak Level MemoryFeature.After installation,TEST THE UNIT’S ELECTRONICS bypressing the test/reset button for five seconds.A seriesof beeps will sound, followed by the message “FIRE!FIRE!” then another two series of beeps and the mes-sage “WARNING! CARBON MONOXIDE!” followed by 4additional short beeps.Operating Instructions Operating Instructions1716