![]() The fire alarm features a latching indicator to identify which unit triggered the detector. If one detector in the series is triggered, they will all sound. This detector also integrates with up to six other compatible devices, such as bells, horns, and repeaters. This hardwired smoke and CO detector uses an ionization smoke sensor to reliably detect smoke from hot, fast-flaming fires, and an electrochemical sensor to detect carbon monoxide. In addition to functioning independently, this hardwired ionization smoke alarm can also integrate with up to 12 other First Alert or BRK hardwired alarms for coverage of larger spaces. The First Alert SC9120BA 10-Year Battery Backup Hardwired Smoke and CO Alarm is designed to help promote household safety. Works in Tandem with Other First Alert Alarms The smoke and fire detector comes with a 9-volt battery and features a pivoting, easy-to-access battery compartment that allows you to replace the battery without dismounting the hardwired detector. The BRK SC9120 hardwire combination smoke and CO alarm with battery backup includes these features: quick plug in power connector for easy installation, 120 volt AC inter connectible (with maximum 18 compatible devices 12 other compatible smoke alarms + 6 compatible devices like bells, horns, repeaters and door closers. ![]() When smoke or carbon monoxide is detected. This Ionization Smoke Alarm is designed for hardwired installation, but it also features a battery backup that helps ensure continued protection in the event of a power outage. The First Alert SC9120BA 10-Year Battery Backup Hardwired Smoke and CO Alarm is designed to help promote household safety. Battery Backup for Detection During a Power Outage AC-powered smoke alarms must be installed in accordance with all local electrical codes. ![]() The mounting bracket keeps the detector secure over a wide rotation range while maintaining perfect alignment. To facilitate hassle-free installation, this fire and smoke detector features a streamlined mounting system with no need to rewire. The sensor is optimized to detect flaming fires, such as those caused by paper, kitchen grease, and other fast-combusting materials. The First Alert Hardwired Smoke Alarm with Battery Backup comes equipped with an ionization sensor to help provide the earliest possible warning of a fast-flaming fire. Side-load battery compartment for convenience. Single test/silence button for simple operation. Lights indicate if the alarm is for smoke or for carbon monoxide. ![]() Can connect to other compatible BRK or First Alert CO smoke detectors. Ionization Sensor Reliably Detects Flaming Fires Hardwired CO smoke alarm features battery backup for constant monitoring. ![]()
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