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Clamp Meters
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
  • MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro
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MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro

  • 1 - 9 Pieces
    $28.88
  • 10 - 99 Pieces
    $26.88
  • 100 - 4999 Pieces
    $24.88
  • >= 5000 Pieces
    $18.88
View product details

MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Electrical Measurement: The MASTECH M266F Digital Clamp Meter measures AC/DC current, voltage, resistance, capacitance, frequency, and continuity, with an integrated insulation testing capability.
  • Non-Contact Measurement: The robust metal clamp enables safe, non-invasive current measurement on live wires without direct contact, enhancing user safety.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With a corrosion-resistant metal clamp coated in non-conductive material, ensure safe and reliable measurements in harsh environments. The robust ABS plastic handle provides ergonomic comfort while resisting wear and tear, outlasting plastic-only designs*.

  • 2. User-Centric Interactive Design

    • With a backlit digital LCD display and intuitive button controls, navigate measurements effortlessly even in low-light conditions. The HOLD function freezes critical readings, simplifying data capture in dynamic settings compared to non-HOLD models*.

  • 3. Advanced Performance Parameters

    • With a wide measurement range covering AC/DC current, voltage, resistance, capacitance, and frequency, handle complex tasks that basic multimeters lack frequency testing for*. The clamp design enables non-contact current measurement, offering safer use than direct-contact tools*.

  • 4. Versatile Scenario Solutions

    • Designed for both home repairs and industrial tasks, this clamp meter adapts to environments like workshops or construction sites where lightweight yet durable tools are critical*. Its CAT-rated safety features make it suitable for high-voltage scenarios unsuitable for consumer-grade devices*.

  • 5. Industry-Leading Certification Standards

    • With certification to CAT III 600V and CAT IV 300V safety standards, prioritize user safety in high-risk electrical environments where uncertified meters may fail*. Overvoltage protection further exceeds basic meter safety protocols*.

Product details

MASTECH M266F Digital Clamp Meter Ammeter Voltmeter Ohmmeter Insulation Tester Frequency Test Ampere Meter Amperimetro

The MASTECH M266F Digital Clamp Meter is a versatile electrical measurement tool designed for professionals and hobbyists alike. With a robust ABS plastic handle, metal-clad clamp, and backlit LCD display, it combines ergonomic design with advanced safety features. It measures AC/DC current, voltage, resistance, capacitance, frequency, and continuity, making it ideal for applications ranging from home repairs to industrial diagnostics.

Technical specifications

FeatureSpecificationApplication Scenario
Display TypeDigital LCD with BacklightClear readings in low-light environments
Clamp MaterialMetal (steel) with Non-Conductive CoatingSafe non-contact current measurement
Safety RatingsCAT III 600V / CAT IV 300VIndustrial and high-voltage field operations
Measurement RangeAC Current: 0.00A–600A; DC: 0.00A–600ABroad coverage for diverse electrical systems
HOLD FunctionFreeze displayed measurementStable readings in dynamic or unstable setups

Customization guide

Adjustable parameters such as measurement range presets and unit display modes allow users to tailor the M266F to specific tasks. For example, set the clamp jaw opening to accommodate thicker wires in industrial setups or switch to auto-ranging for quick troubleshooting in fieldwork.

Get inspired

With the M266F’s CAT III 600V safety rating, you can safely measure high-voltage circuits in industrial environments. Its backlit display ensures clarity in dimly lit workshops, while the HOLD function simplifies capturing transient readings in noisy or vibrating settings.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Measurement RangeAC/DC: 0–600AAC/DC: 0–1000AAC/DC: 0–2000A
Safety RatingCAT III 600VCAT IV 1000VCAT IV 1000V + EMI Shielding
Additional FeaturesBasic HOLDData Hold + Min/MaxBluetooth Sync + IR Thermometer

Supplier's note

  1. Three Technical Breakthroughs:

    • Wider AC/DC Measurement Range: The Pro Model’s 2000A capacity outperforms industry standards, enabling heavy-duty industrial use.
    • Enhanced Safety: CAT IV 1000V ratings (Advanced/Pro) exceed typical CAT III benchmarks, ensuring protection in high-risk environments.
    • Smart Connectivity: The Pro’s Bluetooth sync and IR thermometer integrate seamlessly with digital workflows, reducing manual errors.

  2. Optimal Version Selection:

    • Base Model: Ideal for home/office technicians needing basic measurements (e.g., troubleshooting lighting systems).
    • Advanced Model: Suited for electricians requiring durability and advanced features like Min/Max tracking for continuous monitoring.
    • Pro Model: Best for industrial engineers handling high-current systems or requiring remote data logging (e.g., solar panel installations).

With the Pro version’s 2000A range—30% higher than competitors—you can handle large-scale motors and transformers. Pair this with its EMI shielding to ensure accuracy in electrically noisy factories.

Frequently asked questions

  • Which clamp meter is best for industrial electrical measurements?

  • How do I clean the clamp jaws of a Mastech M266F?

  • Is the Mastech M266F compliant with electrical safety standards?

  • Can the M266F measure frequency and capacitance?

  • What safety features does the M266F clamp meter have?

  • Does the Mastech M266F have a backlit display for dark environments?

  • Is the M266F suitable for harsh workshop conditions?

  • What parameters can the M266F measure besides current and voltage?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Display TechnologyField service, low-light environmentsHigh-res LCD with backlit (ISO 6468 compliant) ▲▲
(Industry: Basic LCD without backlight)		Clear visibility in all lighting conditions; reduces eye strainSlightly higher cost compared to basic models
Measurement RangeIndustrial diagnosticsAC/DC current: 0.6A–600A ▲
AC/DC voltage: 0.1V–1000V ▲
(Industry: 400A/600V max)		Handles heavy-duty tasks like motor testing; versatile for complex systemsRequires advanced user training for optimal use
Safety RatingsHigh-voltage environmentsCAT III 600V, CAT IV 300V ▲▲
(Industry: CAT II 300V)		Safe for industrial use near power distribution systemsHeavier design due to reinforced insulation
Non-Contact ClampLive wire testingUp to 600A (IEC 61010-1 compliant) ▲
(Industry: 400A max)		No need to disconnect live circuits; minimizes safety risksLess accurate for currents below 1A
DurabilityConstruction sitesIP54 rated (dust/water resistant) ▲
(Industry: IP40)		Survives harsh environments like rain or dust stormsBulky size compared to compact handheld meters
Advanced FeaturesComplex troubleshootingHOLD + auto-off + overload protection ▲
(Industry: Basic HOLD only)		Enhanced usability for prolonged measurements; protects against surgesSteeper learning curve due to multifunctional controls

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