User Manual

• In damp or very humid areas, or next to bathrooms with showers.

The moisture in humid air can enter the sensing chamber as water

vapor, and will cool and condense into droplets that cause a nui-

sance alarm. Install detectors at least 5 feet (1.5 meters) away from

bathrooms.

• In very dusty or dirty areas. Dust and dirt can build up on the de-

tector sensing chamber and make it overly sensitive, or can block

openings to the sensing chamber and keep the detector from sens-

ing smoke.

• Near fresh air inlets or returns or excessively drafty areas. Air

conditioners, heaters, fans, and fresh air intakes and returns can

drive smoke away from smoke detectors, making the detectors less

effective.

• In dead air spaces at the top of a peaked roof or in the corners be-

tween ceilings and walls. Dead air may prevent smoke from reach-

ing the detector. See ﬁ gures 4 and 5 for recommended mounting

location.

• In insect-infested areas. If insects enter a detector’s sensing cham-

ber they may cause a nuisance alarm. Get rid of the bugs before

installing detectors where bugs are a problem.