The battery-powered Motion Sensor extends the range of your Ring of Security on your job site. It connects to your Ring lights and cameras to activate connected devices whenever motion is detected on your job site. The Ring App lets you receive motion-activated notifications and adjust settings right from your phone or tablet. To set up your Motion Sensors, simply place them outside and connect them to your Ring devices through the Alarm Pro Base Station and the Ring App. When your Motion Sensors detect motion, it can activate connected lights, cameras and more, so you'll always know when someone is on your job site.