I try to connect wires to cctv "box camera".

It has dry contact control pins for zoom, focus, menu and com.

If i want to zoom, do i connect zoom pin to com?

Here is picture of pins:
http://www.y3k.com/downloads/user_manuals/PCC427 Instructions-4.2.pdf

 

• Z (Zoom): Dry contact control
• F (Focus): Dry contact control
• M (Menu): Dry contact control
• C (Com): Dry contact control

Connect C to Z to zoom
Connect C to F to focus
and so on

 

Thanks. I tried that but it don't work. If i remember correctly, the right way to do it is similar thing but some how different. Maybe Z pin needs 12V?