1.550mm Focal Length Auto Iris Lens Adjustable focal length from 1.5mm to 50mm for versatile image capture, allowing precise zoom and framing to suit different surveillance needs. Auto iris function automatically adapts to changing light conditions, delivering clear, wellexposed images in bright daylight or lowlight environments. Supplied with a protective lens cap to help keep the optics clean and shielded when not in use. Ideal as a replacement lens for existing CCTV camera security systems, restoring performance without requiring a full camera replacement. Designed specifically for 1/3 inch CCTV cameras with CS type mount, ensuring secure installation and image compatibility. Applications: 1. Monitoring large indoor spaces such as warehouses, offices, or retail stores with the ability to zoom in for detailed views or zoom out for wide coverage. 2. Outdoor perimeter surveillance where changing light conditions require an adaptive iris for consistent image clarity throughout the day. 3. Industrial inspection setups needing flexible focal adjustments to capture both closeup detail and broader operational views. Durable construction and precision optical design make this lens a reliable choice for maintaining or upgrading CCTV security systems while providing dependable performance across diverse monitoring environments.