UL bridge smoke & CO (Combo) detector to connect hardwired detectors to wireless detectors. By replacing one hardwired detector on an existing hardwired system, it makes it possible to communicate with wireless smoke detectors and wireless/Co detectors to form an integrated system. In short, it connects existing hardwired 10-year battery replacement detectors with wireless detectors to expand an existing hardwired system. (one per home)

Bridge Smoke & CO Detector - hardwired