McMaster-Carr logo
    Filter by
    Alert Type
    For Telephone Network Type
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Batteries Included
    Battery Size
    Number of Test Connections
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    14 Products

    Line Testers

    Image of Product. Front orientation. Line Testers.
    Diagnose problems with analog and digital telephone lines.
    Display
    Measures
    Alert
    Type
    Type
    Features
    Includes
    Batteries
    Included
    No. of Batteries
    Req.
    Battery
    Size
    Each
    DC Current, DC Voltage, Dial ToneLightDigitalCall Waiting, Caller ID, Number DialedHeadset, Test Leads with Alligator Clips and RJ11 PlugNo2AA000000000000000

    Data Cable Testers with Digital Display

    Image of Product. Front orientation. Data Cable Testers. Data Cable Testers with Digital Display.
    A digital display helps you identify open, short, and miswired circuits in data cable. These testers have a built-in tone generator with selectable tones.
    Measures Capacitance—Testers that measure capacitance can determine the length of coaxial and Ethernet cable.
    Measures
    For Cable Type
    Digital Display
    Type
    Alert Type
    Features
    Batteries
    Included
    Each
    Cable Location, ContinuityCoaxial, Ethernet, TelephoneLCDLight, SoundF-Type Male Coaxial Connector, RJ11/RJ12 Socket, RJ45 SocketYes0000000000000
    Cable Location, Capacitance, ContinuityCoaxial, Ethernet, TelephoneLCDLight, SoundF-Type Male Coaxial Connector, RJ11/RJ12 Socket, RJ45 SocketYes0000000000000

    Line Tester Adapters

    Image of Product. Front orientation. Line Tester Adapters.
    Attach the included cord to an RJ11 wall outlet to isolate the signals of a telephone line, and use alligator clips to connect your testing device.
    No. of Test
    Connections
    Includes
    Each
    6Cord with RJ11 Plugs000000000000

    Data Cable Identifiers

    Image of Product. Front orientation. Data Cable Identifiers.
    Trace unshielded data and telephone cables to their source. Attach the identifier with the included alligator clips and send a signal through the cable. The signal is then received by the removable handheld probe. As you get closer to the cable you're tracing, the probe's audio and visual signals get stronger.
    Measures
    For Cable Type
    Alert Type
    Features
    Batteries
    Included
    Each
    Cable LocationCoaxial, Ethernet, TelephoneLight, SoundF-Type Male Coaxial Connector, RJ11 Plug, RJ45 Plug, Two Alligator ClipsYes0000000000000

    Data Cable Testing Adapters

    Image of Product. Front orientation. Data Cable Testing Adapters.
    Attach the included cord to an RJ45 wall outlet to isolate the signals of a data line, and use alligator clips to connect your testing device.
    No. of Test
    Connections
    Includes
    Each
    8Cord with RJ45 Plugs000000000000

    Tone-Generating Line Testers

    Image of Product. Front orientation. Line Testers. Tone-Generating Line Testers, RJ11 Plug.
    Image of Product. Front orientation. Line Testers. Tone-Generating Line Testers, RJ45 Plug.

    RJ11 Plug

    RJ45 Plug

    Generate an audible signal when testing for short circuits, line continuity, or when locating a cable. Use an amplifier (sold separately) to hear the signal. These tone generators have a light signal to verify polarity.
    Line Testers
    Pouches
    Measures
    Alert Type
    Features
    Includes
    Batteries
    Included
    No. of Batteries
    Req.
    Battery
    Size
    Each
    Each
    Cable Location, Continuity, PolarityLight, SoundRJ11 PlugTest Leads with Alligator ClipsNo19V000000000000000000000000000
    Cable Location, Continuity, PolarityLight, SoundRJ45 PlugTest Leads with Alligator ClipsNo19V00000000000000000000000000

    Noise-Filtering Telephone Line Testing Amplifiers

    Image of Product. Front orientation. Line Testing Amplifiers. Noise-Filtering Telephone Line Testing Amplifiers.
    Use this amplifier with a tone generator or tester to identify a cable without making direct contact with the wire. The tone will get louder the closer you get to the correct cable.
    Amplifiers
    Pouches
    Measures
    Alert
    Type
    Features
    Each
    Each
    Cable LocationSoundNoise Filter, Socket for Lineman's Butt Set0000000000000000000000000000

    Telephone Line Testing Amplifiers

    Image of Product. Front orientation. Line Testing Amplifiers. Telephone Line Testing Amplifiers.
    Use this amplifier with a tone generator or tester to identify a cable without making direct contact with the wire. The tone will get louder the closer you get to the correct cable.
    Amplifiers
    Pouches
    Measures
    Alert
    Type
    Features
    Each
    Each
    Cable LocationSoundSocket for Lineman's Butt Set000000000000000000000000000

    Data Cable Testers

    Image of Product. Front orientation. Data Cable Testers.
    Test for open and short circuits in a coaxial line. The included four push-on remotes and F-adapter allow you to trace four coaxial lines simultaneously.
    Measures
    For Cable
    Type
    Alert
    Type
    Batteries
    Included
    Each
    Cable Location, ContinuityCoaxialLightYes000000000000
    back to top