The Eve Motion is part of the Eve family. The infrared sensor has a range of 120 degrees and detects up to 9 meters away. As soon as you (or 1 of your family members) come in, the sensor signals the other Eve devices, for example. The sensor has a response time of 2 seconds. You can easily see all information via the app (iOS) on your smartphone. The Eve series is compatible with Apple HomeKit, so you can connect all connected devices to each other. The sensor works on 2 AA batteries.