The Dome Home Automation Wireless Z-Wave Battery Powered Siren works with your Vera controller to alert you when a door is ajar, there’s someone on your property or you have a home invasion. No need to look at your phone to know when it’s time to take action. Hear the signal and heed the call. The Dome Siren updates you with your choice of volume levels and you can choose specific chimes for various notifications. Install it easily without wires, anywhere, and its low footprint renders it almost invisible.