First Alert SA520B 전단

  *Local codes permitting
**Note: Based on average retrofitting costs of time, material and 

    labor to connect to existing alarm circuit, drywall repairs, painting, etc. 

    Special cases that require conduit, wire mold, concrete drilling, etc. 

    would add additional costs and increase savings.

**

• Wireless interconnect technology eliminates the need to pull wires 

   through existing walls 
• Save an average of between $150 - $200** per alarm when 

   compared to retrofitting hardwired alarms in existing walls or ceilings
• Faster job turnaround - 4X more jobs completed increases your profits
• Photoelectric sensing technology saves maintenance calls with fewer nuisance alarms.

No matter what your renovation project, 

First Alert OneLink provides a cost effective solution:

Home Addition Projects:
Using the First Alert OneLink hardwired "Bridge Unit" (SA520B), simply replace one 
hardwired alarm in the existing section and add one to the new section. Wireless 
technology saves time, material and labor to connect to the existing alarm circuit. 
Now add standard BRK hardwired alarms as required in the new section and other 
First Alert OneLink battery alarms in the old section to complete the alarm safety 
system and bring entire home up to code. All alarms, hardwired and battery, 
existing and new are now interconnected.

Retrofit Projects:
Property Owners, Facility Managers and Electrical Contractors can all benefit from 
installing First Alert OneLink alarms for existing retrofit projects. Saving $150 - $200** 
per alarm and increasing job turnaround 4X are key reasons to consider First Alert 
OneLink alarms for all of your renovation projects.

When it comes to alarm renovation and retrofit projects, choices have been 
limited. Installing battery operated alarms and sacrificing interconnectability 
or investing in the time and labor to retrofit hardwired alarms have been the 
only options available.* Until Now! First Alert OneLink eliminates the need to 
pull wires through existing walls saving time, money and labor.

•  Exclusive! Voice alarm with programmable location. Programmable with up to 11 locations 

(ex. “basement”). When alarm sounds (if programmed for basement), it will say, “Warning, 

Evacuate, Smoke in Basement”.  If other First Alert OneLink Voice Warning alarms are 
located throughout the house they will also signal, “Warning, Evacuate, Smoke in Basement”.

•  Add additional battery-operated 

First Alert                   Enabled Alarms to create a wireless 

safety network.

•  5-year limited warranty.

Dust Cover: Keeps alarm clean during construction.

               

Technology

All                  alarms include these quality innovative features:

Photoelectric Technology: Helps reduce unwanted alarms.

Test/Silence Button: Tests alarm functions and battery. 
Silences unwanted alarms. Two silence features - Temporarily 
silence low battery chirp for up to 8 hours before replacing 
battery or silence unwanted alarm for several minutes.

Perfect Mount: mounting bracket keeps alarm secure over a 
wide rotation range to allow for perfect alignment.

Optipath 360 Technology™: Patented technology 
provides 360 degrees of direct access to smoke sensor.

RF Interconnect: Reliable and secure radio frequency 
communication between alarms. 915 MHz frequency with 
65,000 security codes and 3 channel frequency hopping.

•  Easily expand an existing interconnected 120V AC 

system by replacing one alarm in the series with 
this alarm.

•  Add additional battery-operated 

First Alert                             

              -    Enabled Alarms to expand without wires.

•  10-year limited warranty.

•  Easily add smoke alarms to every 

bedroom to create a wireless 
safety network.

•  10-year limited warranty.

•  Easily add CO alarms outside bedrooms 

and on every level of the home to 
create a wireless safety network.

•  5-year limited warranty

•  Exclusive! Voice alarm with programmable location. Programmable with up to 11 locations 

(ex. “basement”). When alarm sounds (if programmed for basement), it will say, “Warning, 

Evacuate, Smoke in Basement”. If smoke/CO alarms are located throughout the house 
they will also signal, “Warning, Evacuate, Smoke in Basement”.

•  Add additional battery-operated 

First Alert                   - Enabled Alarms to create  a 

wireless safety network.

•  5-year limited warranty.

Dust Cover: Keeps alarm clean during construction.

               

Technology

All                  alarms include these quality innovative features:

Photoelectric Technology: Helps reduce nuisance alarms, 
especially around kitchens and baths which are more prone 
to nuisance alarms from cooking smoke and shower steam.

Test/Silence Button: Tests alarm functions and battery. 
Silences unwanted alarms. Two silence features - Temporarily 
silence low battery chirp for up to 8 hours before replacing 
battery or silence unwanted alarm for several minutes.

Perfect Mount: mounting bracket keeps alarm secure over a 
wide rotation range to allow for perfect alignment.

Optipath 360 Technology™: Patented technology 
provides 360 degrees of direct access to smoke sensor.

RF Interconnect: Reliable and secure radio frequency 
communication between alarms. 915 MHz frequency with 
65,000 security codes and 3 channel frequency hopping.

Spread Spectrum Horn Tone: Lower and varying horn 
frequency makes it easier for elderly with normal age 
related hearing loss to hear horn. Sweeps through the 
2200 - 3400 Hz range.

Latching Features Alarm Latch: Easily identifies 
initiating alarm even after alarm condition has subsided. 
Low Battery Latch: Identifies which unit is in low battery 
condition. Both features activate for up to 15 minutes. 
(excludes SA520B)

•  Easily expand an existing interconnected 120V AC system 

by replacing one alarm in the series with this alarm.

•  Add additional battery-operated 

First Alert                   

Enabled Alarms to expand without wires.

•  10-year limited warranty.

•  Easily add smoke alarms to every 

bedroom to create a wireless 
safety network.

•  10-year limited warranty.

•  Easily add CO alarms outside bedrooms 

and on every level of the home to 
create a wireless safety network.

•  5-year limited warranty

First Alert OneLink alarms operate on a "mesh network"; a 
2-way communication format that sends, receives and then 
re-sends the alarm signals. If the initiating alarm signal is 
blocked from reaching one of the alarms, the mesh network 
communication reroutes and re-sends the signal via the other 
alarms as shown in the illustration. With competitive one-way 
wireless communication, only the initiating alarm sends a 
signal which may never be received, leaving the blocked alarm 
deadly silent

.

®