3. Locations to Avoid
•  Do not install within 0.9 m (3’) of the following: The door to a 
kitchen, or a bathroom that contains a tub or shower, forced air 
supply ducts used for heating or cooling, ceiling or whole house 
ventilating fans, or other high air-flow areas. 
•  Do not place the alarm where drapes or other objects will block 
the sensor. Smoke must be able to reach the sensor to accurately 
detect conditions. 
•  Do not install in peaks of vaulted ceilings. In this area install as 
shown in images 2B and 2C.
•  Install at least 30.5 cm (12”) away from fluorescent lights as 
electronic noise may cause nuisance alarms. 
•  Keep out of insect infested areas. Avoid excessively dusty, dirty or 
greasy areas. Dust particles may cause nuisance alarms or failure 
to alarm.
•  Extreme temperatures may affect the sensitivity of the alarm. 
Do not install in areas where the temperature is colder than 
4.4°C (40°F) or hotter than 37.8°C (100°F), such as garages and 
unfinished attics. 
•  Do not install in areas where the relative humidity (RH) is greater 
than 95%, non-condensing. Very humid areas, with moisture or 
steam, can cause nuisance alarms. 
•  Normal cooking may cause nuisance alarms. If a kitchen alarm 
is desired, it should have an alarm silence feature or be a 
photoelectric type.
•  Do not place in the garage. Particles of combustion are present 
when you start your automobile.
•  Smoke alarms are not to be used with detector guards unless the 
combination (alarm and guard) has been evaluated and found 
suitable for that purpose.
•  Do not install within 6ft of heating or cooking appliances