Telephone Testers | McMaster-Carr

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14 Products

Measuring and Inspecting

Line Testers

Diagnose issues in telephone lines or Ethernet cables

Line Tester Adapters

Line Tester Adapters

Connect a testing device to a telephone line

Line Testing Amplifiers

Line Testing Amplifiers

Pair with line testers to identify cables without touching them

Data Cable Testers

Data Cable Testers

Identify open, short, and incorrectly wired circuits in coaxial and data cable

Data Cable Testing Adapters

Data Cable Testing Adapters

Isolate the signals of a data line by connecting your testing device to an Ethernet wall outlet

Data Cable Identifiers

Data Cable Identifiers

Trace unshielded data and telephone cables to their source

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)