Brinno APL200 Motion Activated Infrared Illuminator (Black) Produces infrared light, enabling the Brinno MAC200DN Portable Motion Activated Wireless Outdoor Security Camera to capture IR images in a dark environment^Powers on when movement is detected up to 20 feet away in low light environments; won't power on in daytime or bright environments^4 D-cell batteries can be used for over one year at 40 triggers per day^Waterproof housing for indoor or outdoor use^Also works well with Brinno's PHVMAC Motion Activated Hidden Front Door Camera and other night vision surveillance cameras that can capture IR850 nm light