The Alpha Optics AO-4511/4521 digital night vision weapon sight is one of the most advanced scopes in its class. The Alpha Optics AO-4511/4521 is equipped with a standard NTSC/PAL video input/output function that makes it possible to connect to an external video monitor, or to record images for field documentation or training purposes. The device uses the same multi-pin connector to connect the optional digital video recorder and external power access. To accommodate individual user needs, the Alpha Optics AO-4511/4521 has a variety of digitally controlled options, including customizable display brightness, reticle pattern, and reticle color. The quick-release mount of the Alpha Optics AO-4511/4521 fits any Picatinny, MIL-STD-1913, or Weaver weapon rail. The mount’s lever-cam clamping device ensures easy, quick, and reliable mounting and removal. Sensitive to both near-infrared and visible light, the high-performance CCD imaging system of the Alpha Optics AO-4511/4521 offers you a crisp and clear view of your surroundings. It is effective under any weather conditions and ideal for law enforcement and security professionals, as well as for varmint hunting, sports shooting, and nighttime observation.