Review on Southwire M500CX4 Coax Continuity Tester/Mapper: Durable Design, Auto Power-Off, LED Display & 4 Color-Coded Remotes by Tommy Woods

If like us you've had an electrician you'll love this for figuring out wire connections. Very easy to use and works great. Also helps to locate faulty cable connections. If you have digital terrestrial TV and are having signal issues, it may be because you have bad cable connections. If your wire is badly grounded or you have a bad connection, you won't get a strong signal. I wish I had had this years ago after our electrician left our new home with no labels on the wires in the cord. 2 wires for every room in the house!