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Triplett 2021 Full Product Line Catalog: Volume 1 Now Available!
Triplett 2021 Full Product Line Catalog: Volume 1 Now Available!

Electrical Testers - AC Voltage Detector

An electrical tester is a device which measures a number of electrical parameters such as current, potential difference, the presence of electricity in a circuit or wire, and so on. The tester is used by power supply technicians and electricians to check all these parameters in a circuit, electric appliances, live wires, and so on. These devices are also known as voltage detectors, circuit testers, and many other names depending upon their function. They are handy and compact and can be easily carried in hand. Triplett offers a variety of electric testers such as non-contact AC voltage detectors, microprocessor circuit breaker locators, commercial electric AC voltage testers, non-contact electric testers, and so on. Our commercial AC voltage testers such as tone and probe wire and circuit tracers can quickly identify un-energized wires of business networks, telephones, and so on. They come with audiovisual notifications. Our non-contact AC voltage testers possess amazingly adjustable sensitivity, and hence it detects low voltage wiring issues in appliances such as door bells, control circuits, thermostats, and so on. We also offer non-contact electrical testers with magnetic field detection. We assure the safety, cost effectiveness, as well as accuracy of all our commercial electric AC voltage detectors.

  • New
    Triplett Non-Contact Voltage and Magnetic Field Detector ET350
    Triplett Non-Contact Voltage and Magnetic Field Detector ET350

    Non-Contact Voltage and Magnetic Field Detector: AC Voltage Ranges 24 to 1000V & 90 to 1000V - (ET350)

    Triplett
    $24.99


    The Triplett Model ET350 (for US use) combines a Non-Contact Voltage and a Magnetic Field Detector. It has dual AC voltage ranges: 24 to 1000V and ...

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    $24.99
  • New
    Triplett 3-in-1 Circuit Breaker Finder  CBF200
    Triplett 3-in-1 Circuit Breaker Finder  CBF200

    3-in-1 Circuit Breaker Finder - (CBF200)

    Triplett
    $69.99


    Used to locate the correct circuit breaker in a panel to which an electrical outlet or fixture is connected. The Transmitter is connected to the el...

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    $69.99
  • circuit breaker locator 9650 App2
    circuit breaker locator 9650

    Breaker Sniff It™ Micro-Processor Circuit Breaker Locator: 120/220 VAC Transmitter - (9650)

    Triplett
    $44.99


    The Triplett Breaker Sniff-It™ is a microprocessor-based circuit breaker locator designed for high accuracy results. This simple to use product com...

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    $44.99
  • Triplett Sniff It 3 Non Contact AC Voltage Detector 9606
    Triplett Sniff It 3 Non Contact AC Voltage Detector 9606

    Sniff It 3 Non Contact AC Voltage Detector - (9606)

    Triplett
    $11.99


     The Triplett Sniff-It 3 is a high-performance AC Voltage detector with adjustable sensitivity that has a wide measurement range of 25 to 1000ACV, ...

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    $11.99
  • Triplett Non-Contact AC Voltage Detector ET330

    Non-Contact AC Voltage Detector (ET330)

    Triplett Test Equipment & Tools
    $9.99


    The Triplett ET330 Non-Contact Voltage Detector can easily check for the presence of AC Voltage before working on a circuit. It has dual AC voltage...

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    $9.99
  • wire tracer triplett ctx30

    Tone and Probe Wire Tracer and Circuit Tester: POTS Line Tip and Ring Testing 24VAC - (CTX30)

    Triplett
    $24.99


    Quickly trace various types of unenergized cable including electrical wire, twisted pair, LAN, multi-conductor, telephone, alarm and others. It fea...

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    $24.99
  • Triplett Sniff It Jr Non Contact AC Voltage Detector 9604 horizontal
    Triplett Sniff It Jr Non Contact AC Voltage Detector 9604

    Sniff It Jr Non Contact AC Voltage Detector - (9604)

    Triplett
    $4.99


    The Triplett Sniff-It™ Jr is a Non Contact AC Voltage detector with a built-in flashlight.  It detects AC voltage from 50 to 600V and has aubile an...

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    $4.99
  • Triplett Sniff It Non Contact AC Voltage Detector 9602 light
    Triplett Sniff It Non Contact AC Voltage Detector 9602

    Sniff It Non Contact AC Voltage Detector - (9602)

    Triplett
    $14.89


    The Triplett Sniff-It 2 is a high performance non-contact AC Voltage detector with adjustable sensitivity. It provides a wide measurement range of ...

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    $14.89
  • Triplett Sniff It 2 Non Contact AC Voltage Detector 9601
    Contact Sales

    Sniff It 2 Non Contact AC Voltage Detector - (9601)

    Triplett
    $29.99


    This Product has been discontinued. Limited Stock The Triplett 9601 Sniff-It 2 Non-Contact AC Voltage Detector is a high performance AC voltage...

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    $29.99
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  • New
    Triplett Dual Input True RMS AC Voltage/Current Datalogger ACDL200

    Dual Input True RMS AC Voltage/Current Datalogger (ACDL200)

    Triplett Test Equipment & Tools
    $349.99


    The Triplett Model ACDL200 Dual Input True RMS AC Voltage(600V) /Current (200A) Datalogger can datalog up to 131,000 measurements (dual input) or 2...

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    $349.99
  • New
    Triplett True RMS AC Voltage/Current Datalogger ACDL100
    Contact Sales

    True RMS AC Voltage/Current Datalogger (ACDL100)

    Triplett Test Equipment & Tools
    $289.99


    The Triplett Model ACDL100 True RMS AC Voltage/Current Datalogger can datalog up to 100,000 measurements and provides single channel recording of T...

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    $289.99
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Learn More About Triplett Electrical Tester

What is Electrical Tester or AC Voltage Detector?

Electrical testers are a family of products that can detect the presence of voltage and/or current quickly and easily. Electrical testers are portable and ergonomic, allowing the user to safely hold the instrument near the source of electricity for testing. Electrical testers can detect AC only, DC only, or both AC and DC signals. Some testers can also provide continuity and phase tests.

What is Contact and Non-Contact Electrical Testers?

There are two types of testers: Contact and Non-Contact. Contact testers, as the name implies, have probes that must physically come in contact with the signal under test in order to make a measurement. Non-contact devices detect the electrical signal through magnetic induction and therefore do not need a physical connection to make a measurement.

What is AC and DC Electrical Testers?

The most common testers measure AC signals. AC (alternating current) is the power that is provided by utility companies to homes, offices, and manufacturing plants. AC signals are present at breaker panels, wall outlets, switches, light fixtures, etc. DC testers (direct current) are geared toward the measurement of low voltage signals associated with battery powered circuits. 

Built-in IR Thermometer with LCD displays non-contact temperature measurements!

Electrical Testers detect the presence of voltage or current at an outlet, power strip, light fixture, wall switch, or any location where electricity may be present. The user places the tester near (in the case of a non-contact tester) or in touch with (in the case of a contact tester) an electrical circuit. The tester may provide the measurement results audibly, visually, or by both means. Audible detection is usually by way of chirping tones that grow louder and more insistent as the electricity amount increases. Visual alerts can be simple LED lights or full digital readouts with bar graphs.