Extech MA445-NIST True RMS 400A AC/DC Clamp Meter with NCV & NIST - Tech Instrumentation

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Extech MA445-NIST True RMS 400A AC/DC Clamp Meter with NCV & NIST

  • $223.99 USD
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Brand: Extech


  • True RMS feature for accurate readings regardless of waveforms
  • 1.2" (30mm) jaw size fits conductors up to 500MCM
  • Large backlit LCD display and built-in flashlight
  • Functions include: NCV, AC/DC voltage, AC/DC current, resistance, capacitance, frequency, type-k temperature, diode test, continuity
  • Relative mode for capacitance, DC zero and offset adjustment, data hold, max/min, auto power off and low battery indicator

Publisher: Extech

Details: The MA445-NIST is an 11 function, 400A true RMS AC/DC clamp meter and NCV. Compact clamp meter with type K temperature measurements. True RMS feature for accurate readings regardless of waveforms. 1.2" (30mm) jaw size fits Conductors up to 500MCM. CAT III 600V safety rating. Ce and ETL Certified. Comes with test leads, three AAA batteries, general Purpose type K temperature probe and pouch. Product comes with calibration certificate traceable to NIST.

UPC: 793950374467

EAN: 0793950374467

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209 reviews

Shipment arrived on time and as ordered.

La Crosse Technologies V10-TH

The La Crosse V10-TH Wireless Weather Station (Model No. C84343) is absolutely wonderful. The setup was easy with the Quick Setup Guide provided with the unit. The packaging contains additional support information with the website and phone number if there are questions. I especially liked the daily high low readings and the color on the unit! Tech Instrumentation provided great communication as to the availability of the product and shipping details. If fact, it arrived one day prior to the estimated delivery date. I would absolutely recommend this product and Tech Instrumentation for anyone looking for an indoor/outdoor weather station!


I needed a replacement as my original sensor no longer worked. This one works fine.

Excellent Customer Service!

I can't way enough about the customer service at Tech Instrumentation. I was looking for a hard to find specialty part, which the manufacturer told me would need to be custom made. After calling and speaking with a representative at Tech Instrumentation, the part was located and order was filled, right over the phone. Delivery was prompt, and instrument is working great. Highly recommended company for lab supplies!

Worked great

Put batteries in and worked great