New. Box worn. Home Sentinel OS200 model security camera system, 2.4 GHz wireless with line-of-sight between camera and receiver up to 1,000 feet. 4 channel auto switcher. Add up to 3 extra cameras. A 1/3" CCD image sensor with morethan 270,000 pixels, auto focus and auto-iris adjustment. Audio monitoring. Infrared illumination. Optional battery power 8xAA batteries.