The 400-026 is a LAN Tester w/Remote.
Features:
- Tests RJ45, 10 Base-T, Token Ring, RJ11/12 USOC and Coaxial Cables
- Checks continuity, shorted/open and crossed wire pairs
- Coaxial cable tested for shorted or open shield as well as center conductor breaks
- LED's on both units allow for one person testing
- 9V Battery not included