https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
CBC H3Z4518CS-MPIR Megapixel Varifocal Manual IR Lens

CBC H3Z4518CS-MPIR Megapixel Varifocal Manual IR Lens

CBC Co., Ltd.
Region: Japan
Update: 09/08/2010
Key Specifications
Features:
* 3 megapixel manual iris varifocal
* 3x 4.5-13.2mm F1.8
* 1/2” format, CS Mount
* IR corrected for true day/night
* Locking set screws on zoom, focus, and iris rings
* Precision all glass optics ensure minimal distortion
* Comprehensive 3-year warranty
https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions