All viewing distances are tested with a 1/3" Sony CCD Camera and an 850nm illuminator.
To achieve the distance needed, please pay attention to your camera and lens specification before purchasing. It is a normal phenomenon that distance may vary due to different cameras and lens.
S-H301-IR-L WisdomEye™ Intelligent Infrared is using a photocell to dim, disperse and focus the light automatically. There are no blind areas, less background light and no over-exposure of the foreground.