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First Alert

First Alert ONELINK 120V Wired Smoke Detector

  • This hardwired 120V photoelectric smoke detector is equipped with ONELINK wireless interconnect. Up to 18 ONELINK detectors can be linked wirelessly so when one goes off, they all go off! User-friendly features include an easy-access battery door that allows for battery changes without removing the detector from its mounting location and an end-of-life timer that signals when the detector should be replaced. There’s also a low battery warning so you know when it's time to change batteries and a mute button that instantly silences nuisance alarms.