BRK First Alert Smoke & CO Carbon Monoxide Detector

The BRK First Alert SC9120BA is a combination smoke detector and carbon monoxide alarm that typically mounts to a ceiling junction box and connects to 120V hardwired electrical power. It can be interconnected with other BRK, First Alert or American Sensors smoke and CO alarms. Up to 12 smoke alarms, and up to 6 smoke/co combination detectors can be interconnected, so all units will go off when any detector is triggered.

The SC9120BA has replaced the SC9120A in order to provide battery backup. The SC9120BA uses the same wiring harness (plug) and mounting bracket so it's a plug and play replacement.