100 Extension cords are two conductor cords with phone plug and phone jack. Extension cords are used to extend distance from jumper cord, jack plate or junction box. May be coupled for longer length. Number after dash indicates length of cord. It is a two conductor cord with phone jacks on each end.
Headsets plug directly into jumper cord.
System can be lengthened further by adding extension cords to jumper cord. Accepts headset plug and terminates in two vinyl insulated clips. Designed especially for pulling and pairing wires, performing continuity checks and isolating other line problems. M5002 Two outlets with matching jacks and weather-resistant covers. Receives plug from headset or extension cord.