First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

First Alert

$75.99

Hardwire, interconnected wireless smoke alarm with battery backup

Uses photoelectric sensing technology which is environmentally friendlier

Low battery warning; simple to use silence/test button; pullout battery drawer

Add additional battery operated First Alert ONELINK alarms to expand without wires

120-volt with 2 AA battery backup

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