M85485/7-20T3A is a 20 AWG Three conductor, unshielded, unjacketed frequency absorbtive cable

Filterline is a "radio frequency absorptive wire” composed tiny particles of conductive material incorporated into the second layer of a 3-layer hookup wire. These conductive particles intercept and block (filter) out typically low-frequency electrical interferences from other outside sources. This technology allows a signal to be transmitted from the control to the component without being harmed or interrupted.