top deals First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

Best First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

Amazon: Customer Reviews: First Alert SA521CN ONELINK Hardwire 4 stars. "Unpredictable?" I have 7 of the First Alert SA520 Onelink units that were installed in my home 2.5 yrs ago. They were easy to set up although getting power

In the event of a fire every second counts. If a fire were to begin in your basement and the alarm there sounded, you may not hear it right away if you're sound asleep two floors up. With traditional battery-operated alarms, you lose valuable time waiting for the smoke to rise to another alarm, on another level, before the alarm on your floor sounds. But with First Alert ONELINK alarms, if one detects danger, they all sound. This can alert you sooner, and it increases your chances of getting out safely. Until now, alarms that could signal each other were only available in homes with hardwired

First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

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First Alert SA521CN ONELINK Hardwire Wireless Features :

• 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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