User Manual

• Near ﬂ orescent light ﬁ xtures. Electrical “noise” from nearby ﬂ ores-

cent light ﬁ xtures may cause a nuisance alarm. Install detectors at

least 10 feet (3 meters) away from such light ﬁ xtures.

Limitations of Smoke Alarms

• Smoke detectors will not work without power. Battery operated

detectors will not work without batteries, with dead batteries, or

if the batteries are not put in properly. AC-powered detectors will

not work if their AC power supply is cut off by an electrical ﬁ re,

and open fuse or circuit breaker, or for any other reason. If you are

concerned about the reliability of either batteries or your AC power

supply for any of the above reasons, you should install both battery

powered and AC powered detectors for maximum safety.

• Smoke detectors must be tested regularly to make sure the batteries

and the alarm circuits are in good operating condition.

• Smoke detectors may not sense ﬁ res that start where smoke cannot

reach the detectors such as in chimneys, in walls, on roofs, or on the

other side of closed doors. If bedroom doors are usually closed at

night, detectors should be placed in each bedroom as well as in the

common hallway between them.

• Smoke detectors also may not sense a ﬁ re on another level of the

residence or building. For example, a second-ﬂ oor detector may not

sense a ﬁ rst-ﬂ oor or basement ﬁ re. Therefore, detectors should be

placed on every level of a residence or building.