with the clamp meter can you measure amps in DC ?what is the maximum dc amperage it will measure?

Yes, in fact I purchased this clamp meter to be able to measure current flowing to my car starter when cranking engine, and it really works well for that. the maximum amps is 600 amps with 0.1mA resolution.

This tester seems very slow to obtain readings, I mean compared to cheaper units it is slooow is there something wrong with it? Batteries are new!

The only reading that takes a second or so on mine is the capistor test. All other reading seem fine. Maybe you got a defective unit.

Where can I download a mestek cm86b pdf owners manual?

Mine came with one, but if you misplaced it, or it didn't have one, you may be out of luck. I went to the MFG's website and did not see a selection to acquire a manual. However, you may want to contact them directly via the contact page of the site, and if you're lucky they may not only respond, but have one they could send you.

how accurate is th DC current measurment?

It is accurate.It has an acceptable range of tolerance.DC Current: 60A/600A ±3.0%

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Digital Clamp Meter,MESTEK Clamp Multimeter Voltmeter Tester Amp Volt Meter, Auto-ranging NCV True RMS 6000 Counts, Measures AC DC Voltage Current Resistance Capacitance Temperature Diodes Continuity

Product ID: 492616689

Details

Brand
MESTEK
Colour
Black New
Item weight
195 Grams
Power source
Battery
Style
Fast Measures

⚡True-RMS accuracy up to 600V/600A

🔦Backlit LCD + built-in flashlight

🌡️Temperature measurement for liquids & air

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1239 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Empower Your Electrical Expertise with Precision & Safety!

WORK ANYWHERE ANYTIME - Backlit LCD display paired with an integrated LED flashlight lets you conquer dimly lit electrical closets and tight spaces without missing a beat.
PRECISION YOU CAN TRUST - True-RMS technology delivers ultra-accurate AC/DC voltage and current readings up to 600V/600A, ensuring flawless diagnostics every time.
SAFETY MEETS CONVENIENCE - IEC CAT III 600V rated with overload and double insulation protection, plus non-contact voltage detection for safe, hands-off voltage checks.
SMART FEATURES FOR SMART PROS - Auto-ranging, data hold, zero function, low battery indicator, and auto power-off keep your workflow seamless and efficient.
ALL IN ONE DIAGNOSTIC POWERHOUSE - Measures voltage, current, resistance, capacitance, temperature, continuity, and diodes—your ultimate troubleshooting companion for home, auto, and industrial use.

The MESTEK AC/DC True-RMS Clamp Meter is a versatile, high-accuracy tool designed for professional-grade electrical diagnostics. It measures up to 600V/600A across AC/DC currents and voltages, with additional functions including temperature sensing, capacitance, resistance, and continuity testing. Featuring a backlit LCD and built-in flashlight, it excels in low-light environments. Safety-certified to IEC CAT III 600V standards, it offers non-contact voltage detection and robust overload protection, making it an indispensable tool for electricians, technicians, and serious DIYers alike.

Specifications

ASIN	B09VJSMGK7
Best Sellers Rank	#229,738 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,200 in Multi Testers
Brand Name	MESTEK
Color	Black New
Customer Reviews	4.4 4.4 out of 5 stars (1,260)
Included Components	2 x 1.5V AAA Battery, 1 x Digital Clamp Meter,1 x Temperature probe
Item Dimensions	20 x 7.5 x 3.7 centimeters
Item Weight	195 Grams
Manufacturer	MESTEK
Measurement Type	Multimeter
Model	CM83E
Part Number	83E
Power Source	Battery Powered
Specification Met	CE
Style Name	Fast Accurately Measures AC DC Voltage & Current
Upper Temperature Rating	1832 Degrees Fahrenheit

Reviews

F**N

Locel quality

28.10.2025

C**N

Producto muy bueno

3.04.2026

D**7

Très bien, j’ai hâte de la tester

25.11.2025

T**N

Appareil indispensable pour un électricien, précis et pas trop cher

27.08.2023

E**N

Bra med möjlighet att kunna mäta laddningsström och tjuvström i bilar. Bra pris.

15.10.2023

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1239 DH

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In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Morocco.

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