First Alert SA521CN-3ST Onelink Wireless Hardwired Smoke Alarm
$37.93$35.00
Wirelessly interconnect alarms. 120VAC hardwired wireless interconnect smoke alarm with battery backup. To expand protection to include both existing hardwired alarms and new wireless alarms, simply replace one existing hardwired alarm with Onelink, then add Onelink battery operated alarms elsewhere and when one alarm in either series alarms, all alarms will be notified.
Easily link alarms together with the press of a button. When one alarm sounds, they all sound for maximum whole home protection. Photoelectric smoke sensor reduces nuisance alarms from cooking smoke or shower steam.
Easy access battery drawer: no need to remove alarm from ceiling to change battery. 10-year limited warranty. Meets UL standards.
120v ac hardwired, easily replace one existing hardwired alarm with Onelink SA521 and then add Onelink battery operated alarms to connect wireless alarms with hardwired alarms–when one sounds, they all sound
Battery backup, provides consistent protection for added safety during power outages
Photoelectric smoke sensing, optimal protection from smoldering fires
Reduces false alarms like those caused by cooking fires and shower steam
Mute button, mutes unnecessary alarms immediately.
also tests alarm function with same button
Eco-friendly, completely recyclable as an electronic device
EZ access battery door, no need to remove alarm from ceiling to change battery
Optional theft-prevention lock, when activated, batteries and/or alarm cannot be removed without proper tools
2AA batteries included
Loud 85db alarm
10-year limited warranty
Smoke alarms should be replaced every 10 years for maximum protection
Meets UL217 standard
FCC compliant.
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UPC
029054002440
Brand
First, Alert
Model #
SA521CN-3ST
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