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Page 9 of 9 CM2837
**Interconnected alarms provide added
warning as compared to single alarms.
• Pull out battery drawer makes it easier to replace the batteries. No need to
remove from wall or ceiling. The competition’s battery access on the back of
the unit.
• The SA520B hardwired alarm has the same contractor preferred features like
a AC power quick connector, large opening in mounting bracket for easy
access to wiring, keyhole slots in the bracket to eliminate the need to
completely remove the electrical box screws to install the bracket and a
universal bracket that fits any standard electrical box up to 4” in size.
• All smoke alarms have a 10-year limited warranty and CO’s or Smoke/CO
combos have a 5-year limited warranty.
First Alert
®
OneLink
®
Competitive Comparison Summary
Feature
Competitive Wireless
SKU Lineup
Smoke and CO alarms
(4 SKUS)
Smoke alarms only
(2 SKUS)
Smoke-Sensing Technology Photoelectric Ionization
Patented Optipath 360™ Smoke
Technology
Yes No
Electrochemical CO Sensor Yes No CO Alarm
Pullout Battery Drawer Yes No
Voice With Programmable
Location
Yes (First Alert Exclusive) No Voice
CO Peak-Level Memory Recall Yes No CO Alarm
Battery 2 AA batteries 9V and 3 AA batteries
Unique House Code
Automatic Software-programmed
65,000 unique codes
255-location 8 position dip switch
(manual)
Frequency
915MHz with 3-channel frequency
hopping
433 MHz w/o frequency hopping
Silence Feature
Nuisance and low battery silence
for up to 8 hours
Nuisance only
Mesh Network Yes No