First Alert 1039830/SA521CN-3 Wireless Photoelectric Smoke Alarm
- Buy 3 for $65.70 each and save 21%
- Buy 12 for $64.94 each and save 21%
- Hardwired smoke alarm can communicate wirelessly with other compatible alarms to create a fire alarm system
- When one alarm is triggered, all connected alarms will sound
- Integrated battery backup allows continuous detection during power outages
Smoke alarms battery powered photoelectric"onelink" ac/dc Easily expand an existing interconnected 120-volt AC system by replacing one alarm in the series with this alarm. Add additional battery-operated First Alert Onelink enabled alarms to expand without wires. Photoelectric smoke alarm reduces nuisance alarms. Alarm and low battery silence feature.