Smart Things Motion Sensor Samsung Smart Things Motion Sensor The Smart Things Motion Sensor can monitor movement in your home & send you alerts if there’s unexpected activity when you’re away. It can trigger lights & other connected devices to turn on when there is movement, & monitor temperature. Get instant alerts if someone unexpectedly enters your home By placing a Smart Things Motion Sensor in your home, you can receive immediate alerts on your smartphone if someone is trying to enter. Smart Home. Intelligent Living. Smart Things lets you easily monitor, control & secure your home from anywhere.