https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
ZS0120AIR   Auto IR 120

ZS0120AIR Auto IR 120

Fuzhou Zhengsheng Photoelectric Instrument Co.,Ltd.
Region: China
Update: 04/07/2006
Key Specifications
Specification : Auto IR 120

Focal length : 120mm

Relative aperture : 1.25

Angular field of view : 3

Back focal length : 12.526mm

Iris system : Auto focus(DC) (Improted from Japan)

Mount type : CS-Mount

Weight : 2.5kg

https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions