The Brinno Motion Sensor detects motion and activates the TLC200 Time Lapse Camera to shoot for 10 seconds. The ATM100 attaches around the lens of the TLC200 with a magnetic ring and connects via a 3.5mm jack. This waterproof infrared motion sensor will detect movement up to a distance of 13.1' (4 m) and within a 90deg. angle of view. The images are stored as an AVI file and while this accessory can be used for many purposes, it is designed as a security measure and as a way to monitor wildlife.