CO alarms should be installed outside each sleeping area.
Install alarms on every level of the home. It is best to use interconnected alarms. When one sounds, all CO alarms in the home sound.
Follow the instructions on the package to properly install the CO alarm.
Test CO alarms at least once a month.
Replace CO alarms according to the instructions on the package.
Know the sounds the CO alarm makes. It will sound if CO is detected. It will make a different sound if the battery is low or if it is time to get a new CO alarm.
If the battery is low, replace it.
If the CO alarm sounds, you must get fresh air. Move outdoors, by an open window or near an open door. Make sure everyone in the home gets to fresh air. Call the fire department from a fresh air location. Stay there until help arrives.