BRK electronic SA340B Leaflet

The First Alert Cat. No. SA340B is a battery operated, 9V (three 3V lithium 

power cells) single station smoke alarm specifically designed for residential 

and institutional applications including sleeping rooms of hospitals, hotels, 

motels, dormitories and other multi-family dwellings as defined in standard 

NFPA 101. Model SA340B complies with UL217, CSFM, NFPA 72, HUD, 

FHA and other agencies that model their codes after the above agencies. 

It meets building codes where tamperproof 10-year sealed lithium battery 

operated smoke alarms are required.

First Alert SA340B features a dual ionization smoke sensing chamber, 

an 85 dB horn, a sealed 10-year lithium power cell power supply that is 

permanently installed upon activation of unit, a single button for test/

silence and a red LED that blinks to indicate unit is receiving power. The 

tamperproof design will not allow the powercells to be removed after 

installation. The low power warning indicator will cause the alarm to "chirp" 

when it reaches the end of its service life and needs to be replaced. Upon 

end of life, the unit meets UL requirements for 

disabling the alarm and non-reinstallation 

of unit to mounting bracket.

Designed for surface 

mounting, the SA340B 

includes mounting anchors 

and screws. Includes a 

gasketless base for 

easy installation and 

a new mounting 

bracket that 

keeps the alarm 

secure over a 

wide rotation 

range to allow 

for perfect 

alignment.  

Pins are provided 

to lock unit to 

mounting bracket 

and to prevent 

removal and 

theft of unit.