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First Alert Onelink wireless smoke alarms and carbon monoxide (CO) alarms give you the unique ability to interconnect alarms within your household. This feature gives the owner the advantage of placing an alarm in just about any location in the house while still ensuring easy installation and connectivity. Models such as the First Alert SA500CNA ONELINK battery operated smoke alarm and the First Alert SA520CNA ONELINK hardwire smoke alarm have the capability to connect both with wireless as well as hardwired detectors in your home. They also include photoelectric sensor alarms and feature an easy access battery drawer. Whether you just need one alarm, or enough for your whole house, First Alert alarms are the ideal choice to safeguard your home.


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First Alert SCO500NVA ONELINK Battery Operated Combo Carbon Monoxide and Smoke Alarm First Alert SCO500NVA ONELINK Battery Operated Combo Carbon Monoxide and Smoke Alarm
Capable of linking up to 18 different alarms throughout your home.
Your Price: $69.99
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First Alert SA520CNA-3ST ONELINK Hardwire Smoke Alarm with Interconnect Compatibility First Alert SA520CNA-3ST ONELINK Hardwire Smoke Alarm with Interconnect Compatibility
Wireless integration gives effortless connectivity; Loud 85-decibel alarm.
Your Price: $59.99
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First Alert SA500CNA-3ST ONELINK Battery Operated Smoke Alarm with Interconnect Compatibility First Alert SA500CNA-3ST ONELINK Battery Operated Smoke Alarm with Interconnect Compatibility
Easily link alarms together with the press of a button.
Your Price: $59.99
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First Alert CO500CNA ONELINK Battery Operated Carbon Monoxide Alarm First Alert CO500CNA ONELINK Battery Operated Carbon Monoxide Alarm
Wireless integration gives effortless connectivity; Loud 85-decibel alarm.
Your Price: $89.99
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