https://www.asmag.com/project/resource/index.aspx?aid=16&t=secutech-made-in-taiwan-products-and-solutions
Product Info
Auto Zoom IR Bullet Camera Controlled by RS485

Auto Zoom IR Bullet Camera Controlled by RS485

AllVision Technology Co., Ltd.
Region: Taiwan
Update: 12/07/2011
Key Specifications
Model: CFR500VH

4~9mm lens, 540TVL

8 hi-power LEDs, 30M

Auto Zoom Lens Control, RS485 OSD included

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