Modified Littel-Plug® phone plug, 2- or 3-conductor, with coupling ring that can be threaded to thread projection of mating panel jack or to threaded end of the Lock-Extension Jax®. Locks connection after plug has been fully inserted into its mating panel jack or Extension Jax®.
2- or 3-conductor
Locks connection after plug has been fully inserted into its mating panel jack or Extension Jax
