Screened cable, also known as shielded cable, is a type of electrical cable that is designed to provide protection against electromagnetic interference (EMI) and radio frequency interference (RFI). It consists of one or more insulated conductors, which are surrounded by a metallic shield. The shield is typically made of a conductive material, such as copper or aluminium, and is used to block or absorb any unwanted electromagnetic signals that could potentially disrupt the transmission of the electrical signals within the cable. This shielding helps to ensure that the cable can maintain its signal integrity and perform reliably, even in environments where there may be a high level of electromagnetic interference. Screened cable is commonly used in applications such as data communications,