Access Control System Cable

https://www.echuwirencable.com/products/access-control-system-cable/

Does Door Access Cable Need to Be Shielded?
composite cable for access control systems typically need to be shielded, especially in environments with significant electromagnetic interference. Using shielded cables can effectively reduce external interference and ensure the stability and reliability of signal transmission. This is particularly important for data transmission lines (such as RS-485 cables) and connections between card readers and controllers, where shielded access control composite cable are the better choice.