Connect the Yale Smart Living SR-SD smoke detector to your Yale Smart Home alarm system and extend your home's security. The smoke detector is wirelessly connected to your smart device (iOS and Android) via the hub. When the sensor detects smoke, the smoke detector will produce an audio signal of 85dB. Connected users will receive a push message via the app at the same time. You can also place several smoke detectors in the house. Start with the hallways and attic, for example. If you have smoke detectors in several places in the house, you can protect yourself and your loved ones from fire hazards even better.