The Night Optics USA Medium Range Infrared Illuminator extends the range of detection and recognition of your night vision device. By adding this IR illuminator to your NVD kit, you can reach out further into the night to see your target. This powerful illuminator attaches quickly and easily to your NVD via the 1/4"x20 tripod mount. With a flip of the switch you'll be seeing further and more clearly than you thought possible. This unit is compatible with all generations of night vision gear, and it is eye safe.