Extech MA445 True RMS Clamp Meter, AC / DC, Built in Non-Contact Voltage (NCV) Detector, 400 A


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SKU: 1555734
  1. Model: MA445
  2. AC Current(A): 400
  3. DC Current(A): 400
  4. Resistance(mΩ): 40MΩ
  5. AC Voltage(V): 600
  6. DC Voltage(V): 600


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Brand: Extech
Category: Digital Voltage, Current and Frequency Meter

This compact clamp meter fits in a pocket or small field kit but offers multimeter capability. Voltage, current, resistance, capacitance, frequency, and diode/continuity test functions provide all the data you need for your application. Auto power-off conserves battery and can be disabled for continuous use. Low-battery indicator prevents productivity-lowering downtime.

The MA445 clamp multimeter’s True RMS feature uses a more advanced formula to compensate for the kind of electronic interference commonly caused by fluorescent lights, motor drives, computer power supplies, and other electronic systems, making it ideal for a variety of commercial or industrial applications.

Extech Ma445 True Rms Clamp Meter, Ac / Dc, Built In Non-Contact Voltage (Ncv) Detector, 400 A

The MA445 True RMS clamp meter is packed with a number of different features that make taking measurements that much easier. Using Data Hold, your readings remain on screen until you’ve had a chance to record your findings. Likewise, the Max/Min feature retains the high and low values for you to record.

Model MA445 (20000-75) measures AC/DC current and AC/DC voltage, adding True RMS and DC zero function for greater accuracy and type K thermocouple temperature measurement.


  1. Pocket-sized with a 1.2″(30mm) jaw for conductors up to 500 MCM
  2. Thumb dial measurement mode selection is glove-friendly
  3. Built-in noncontact voltage detector adds safety
  4. The data Hold function makes taking measurements easy in any conditions
  5. Built-in Non-Contact Voltage (NCV) detector
  6. MultiMeter functions include Resistance,
  7. Capacitance and Frequency
  8. Relative Mode for Capacitance
  9. Data Hold freezes reading on display
  10. Auto Power Off with disable and Low Battery indication
  11. Large backlit LCD display
  12. Complete with test leads, three AAA batteries, and a pouch

Package Includes:

1 x Extech MA445 True RMS Clamp Meter

1 x Test Leads

3 x AAA Batteries

1 x Pouch



AC Current(A) :


DC Current(A)


Current accuracy(A)

AC: ±2.5%, DC: ±2.0%



Input Voltage (VAC)


DC Voltage(V)


Voltage accuracy(V)

AC: ±1.2%, DC: ±0.8%



Frequency (MHz)


Operating Temperature (°C)

-40 to 1000

Shipping Weight 0.598 kg
Shipping Dimensions 30 × 16 × 8 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: India