The HomeAware Wireless, Multifunctional Transmitter wirelessly connects to your HomeAware Door Sensor, Motion Sensor, Window and Door Sensors to signal the HomeAware main alerting unit. (SA-HA360 - sold separately). The Transmitter alerts up to 5 different door locations, example; FTDOOR and BKDOOR. Will alert you to windows or doors being opened with the motion sensor (MOTION) or by pressing the button on the transmitter will alert (HELP). The HA360DC can also connect to your Midland NOAA Weather Radio (STORM) or a home security system (SECURIT). The HA360 main unit will send a signal to any HomeAware remote receivers located in different rooms of your home.