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IR Illuminators or Infrared illuminators used in CCTV and Video Surveillance systems consist of two types; LED Infrared Illuminators and Halogen Bulb IR Illuminators. IR illuminator can greatly improve the effective night vision of an IR sensitive security camera and the overall performance of CCTV video surveillance systems in low light applications. Weather halogen bulb or LED Infrared Illuminators are chosen the key to selecting the correct IR illuminator is based on three major factors. 1. The IR Illuminators overall Distance capabilities 2. The spread of the Infrared illuminator beam 3. The Wavelength in which the IR illuminator produces light as to it being slightly visible to completely invisible to the human eye.