The SimpliSafe Motion Sensor is a top-selling motion detector known for its compatibility with the SimpliSafe home security system. It uses passive infrared technology to detect motion and can be easily installed in any desired location. The motion sensor has adjustable sensitivity levels and a wide detection range. It is battery-powered and has a long battery life, ensuring reliable performance. The SimpliSafe Motion Sensor is highly rated by customers for its accuracy, ease of use, and seamless integration with the SimpliSafe system.