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First Alert Wireless Interconnect Hardwired Smoke Alarm - SA521CN-3ST (1039830)

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Wireless Interconnect Hardwired Smoke Alarm

The First Alert SA521CN-3ST Interconnected Smoke Alarm allows owners to create an interconnected fire alarm system without the cost and hassle of wiring. Use this smoke detector to replace an existing hardwired smoke alarm and then install additional First Alert Wireless alarms for an interconnected safety network (additional alarms sold separately). This hardwired smoke detector can connect and communicate with up to 18 compatible alarms, so when one alarm is triggered, the entire system reacts. An integrated battery backup ensures the smoke alarm continues to work even during power outages.

Photoelectric Sensor Warns of Smoldering Fires

The First Alert Wireless Interconnect Smoke Alarm comes equipped with a photoelectric sensor to provide the earliest possible warning of fire. The sensor is optimized to detect larger smoke particles produced by smoldering fires, such as those caused by unextinguished cigarettes. It also distinguishes between real threats and smoke/vapor produced during showering, cooking, and other everyday activities, helping minimize the number of false alarms. A patented smoke entry system helps ensures reliable detection by providing a direct air pathway to the sensor.

Interconnectivity for Larger Areas

The hardwired smoke alarm can be connected to other compatible BRK and First Alert hardwired alarms for larger buildings such as dormitories, office buildings, and apartments. Connect up to 18 compatible devices: up to 12 smoke alarms and six compatible devices like horns and repeaters. The communication distance (range) between any two First Alert Wireless Interconnect Alarms is typically 50 ft. (15 meters) inside of a home. Some features of a home, such as the number of floors, number/size of rooms, furniture and types of building materials used may reduce the range of wireless interconnect alarms. First Alert helps you create a comprehensive warning system for you and your property.

Battery Backup for Continuous Coverage

In the event of a power outage, the smoke alarm is still able to function thanks to its two AA backup batteries. An indicator sound is emitted when the batteries need to be replaced. The inclusion of an optional drawer and mounting bracket lock will discourage tampering.

Test and Silence Button

Mute Button has been included to serve the dual purpose of silencing nuisance alarms and testing the functionality of your alarm.

EZ-Access Battery Door

The addition of an EZ Access Battery Door removes the hassles and burdens associated with changing your alarm's batteries.

0:00 Why Should I Use Smoke Alarms?
0:24 First Alert SA521CN-3ST Interconnect Smoke Alarm
0:37 Wireless Interconnect Feature
0:58 Photoelectric Sensor
1:08 Battery Drawer Easily Slides Open
1:46 Where Should I Install Photoelectric Smoke Alarms?

#firstalert #smokealarm #SA521CN3ST