First Alert CM2837 manual Page 9 of, Feature, Competitive Wireless

•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		Smoke alarms only
	(4 SKUS)		(2 SKUS)
Smoke-Sensing Technology	Photoelectric		Ionization
Patented Optipath 360™ Smoke	Yes		No
Technology
Electrochemical CO Sensor	Yes		No CO Alarm
Pullout Battery Drawer	Yes		No
Voice With Programmable	Yes (First Alert Exclusive)		No Voice
Location
CO Peak-Level Memory Recall	Yes	No CO Alarm
Battery	2 AA batteries		9V and 3 AA batteries
Unique House Code	Automatic Software-programmed		255-location 8 position dip switch
	65,000 unique codes		(manual)
Frequency	915MHz with 3-channel frequency		433 MHz w/o frequency hopping
	hopping
Silence Feature	Nuisance and low battery silence		Nuisance only
	for up to 8 hours
Mesh Network	Yes		No

**Interconnected alarms provide added warning as compared to single alarms.

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