Fluke Networks 10210100 RJ-11 to RJ-45 4-Wire In-Line Adapter

The Fluke Networks 4-Wire In-Line Modular Adapter allows for easy testing on live phone lines without interrupting service. This adapter is designed with a reliable construction to ensure excellent connectivity.

Key features include a replaceable test lead with a modular clip, sturdy angled copper contacts that prevent alligator clips from slipping off, and clearly marked circuits on all sides for easy identification. This product also features small holes in each contact for testing probes.