aluminum-polyester wrapped shield around 4 conductors with stranded drain wire, polyester tape over this shielded group, 21-22 AWG (7x30) tinned copper, PVC insulated, cabled in 3 groups of 7, ring ...

Twisted pair cables are available unshielded (UTP) or shielded (STP), with UTP being the most common. Shielded twisted pair (STP) is used in noisy environments and protects against electromagnetic ...