Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, White

The First Alert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm is designed to link the alarms throughout your home, providing a reliable and secure home safety network. Equipped with a photoelectric smoke sensor optimized to detect larger smoke particles produced by smoldering fires, this 120VAC hardwired wireless detector with battery backup helps minimize the number of false alarms.

The RF Interconnect technology used in this alarm features a 915 MHz frequency with 65,000 security codes and three-channel frequency hopping, ensuring reliable and secure communication between the Wireless Interconnect alarms. Users can easily link the alarms with the press of a button, allowing for the maximum in whole-home protection by wirelessly connecting up to 18 First Alert-enabled alarms.

The First Alert SA521CN-3ST (Model SA520B) is compatible with a variety of First Alert wireless alarms, including the SA501CN-3ST (SA501B), SA501CN2-3ST (SA501B2), SA511B, SA511CN2-3ST, SA520B, SA521CN-3ST, CO511B, SCO501CN-3ST (SCO500B), and SCO501CN2-3ST. This versatility ensures seamless integration and the ability to tailor the home safety network to individual needs.

In the event of a power outage, the hardwired alarm includes 2 AA backup batteries to provide continued monitoring, giving homeowners peace of mind. The alarm also features a test/silence button, low-battery warning, and an EZ access battery door, making maintenance and testing a simple task.

As the most trusted brand in home safety since launching the first residential smoke alarm in 1958, First Alert is committed to keeping families safe. The First Alert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm is a testament to this commitment, providing reliable and effective home protection.

It is important to note that this product is intended for non-professional, do-it-yourself installation. For information about a professionally installed and monitored system, First Alert Professional can be contacted at 1-800-921-6025. It is important to note that First Alert Professional is not affiliated with BRK Brands, Inc.

In conclusion, the First Alert SA521CN-3ST (Model SA520B) Wireless Interconnect Integrated Smoke Alarm is a comprehensive and versatile home safety solution that helps keep families protected with its advanced features and reliable performance.

product information: