Best Digital Clamp Meters: 4 Picks Compared

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This guide covers four digital clamp meters from the product list gathered for this search. Each entry reports the current, voltage, temperature and included-item figures its listing states, with the date the listing was checked. A clamp meter reads current by closing its jaw around one conductor, so the jaw size and the way the listing describes the reading both matter.

Clamp readings are taken on live conductors. Read each listing’s stated voltage ceiling and safety category before use, clamp only one conductor at a time, and leave panel work to a licensed electrician.

Quick answer

The TEMIRUP CM87C is the pick when inrush current matters, since its listing names an inrush function and VFD and LoZ modes. The TEMIRUP CM83E is the general-purpose pick, with a 600 A AC and DC clamp, true-RMS readings and a non-contact voltage alarm. The UEi DL379B suits industrial-style work with a magnetic mount and a 3-year limited warranty. The Milwaukee 2236-20 is the HVAC/R listing, with a 1.30-inch jaw and a 600 A AC/DC rating.

Comparison table

Pick	Current stated	Voltage stated	Temperature rating	Included items stated
TEMIRUP CM87C Inrush Clamp Meter	600 A AC/DC, inrush mode	600V AC/DC (overload note)	1832 degrees F	Clamp meter, test leads, thermocouple, hard case, batteries
TEMIRUP CM83E True-RMS Clamp Meter	600 A AC/DC	600V AC/DC; CAT III 600V and CAT IV 600V in specs	1832 degrees F	Clamp meter, batteries, test leads, K-probe
UEi DL379B Digital Clamp Meter	AC amps; no maximum stated in bullets	Minimum operating voltage 300 volts AC in specs; CAT IV 300V, CAT III 600V	752 degrees F	Test leads, K-type probe, 2 AAA batteries, pouch
Milwaukee 2236-20 Clamp Meter for HVAC/R	Up to 600 amps AC/DC	Up to 600 volts AC/DC	752 degrees F	Listed only as “Item”

How the list was built

The keyword names a brand that does not appear in any of the four listings, so the title names the product type they share. Each pick is a digital clamp meter in its title or style field. The figures come from the listing bullets and fields, and the page does not verify them against the physical meters.

Product picks and who each one fits

Worked example: comparing the stated current and temperature limits

Three of the four listings state a 600 A AC and DC current rating: the CM87C, the CM83E and the Milwaukee. The UEi bullets name AC amps without a maximum, so its current limit is unstated. A 600 A rating only says how high the meter reads. For bundled conductors, the jaw size decides whether the clamp fits at all, so that figure can matter more than the current ceiling.

The two TEMIRUP listings state an upper temperature rating of 1832 degrees F, while the UEi and Milwaukee list 752 degrees F. The gap is 1080 degrees F, which means the TEMIRUP meters are rated for much hotter probes than the other two. A buyer who only needs a temperature reading near room temperature will not use that gap, but it matters for furnace or exhaust checks.

Jaw size gives a physical comparison. The CM87C lists a 30mm jaw, which is about 1.18 inches, while the Milwaukee lists 1.30 inches. The Milwaukee jaw is about 0.12 inches wider, which can matter when a bundle of conductors has to fit inside the jaw.

What the listings do not say

• The UEi listing states no maximum current, so its current range cannot be compared with the other three.
• The Milwaukee listing names no test leads and no non-contact voltage function.
• The UEi weight field reads 21.27 g and the Milwaukee dimensions field reads like a package size, so both field values need confirmation.
• The CM87C bullets describe the package differently from its specs field.
• No listing gives a calibration interval.

Frequently asked questions

Which clamp has the largest stated jaw opening?

The Milwaukee lists a 1.30-inch jaw opening, which is the only jaw figure stated in inches. The CM87C lists a 30mm jaw, about 1.18 inches, and the CM83E and DL379B list a large or slim jaw without a number.

Which of these clamps includes non-contact voltage detection?

Three of the four do. The CM87C, the CM83E and the DL379B each name a non-contact voltage function. The Milwaukee listing names none.

Which listings include a temperature probe?

The CM87C lists a thermocouple, the CM83E lists a K-probe, and the DL379B lists a K-type temperature probe. The Milwaukee’s included items field reads only “Item”, so no probe is stated.

Which listing has the longest warranty?

The UEi DL379B lists a 3-year limited warranty, redeemable in the US. The CM83E lists a 2-year manufacturer warranty, and the CM87C and CM83E bullets name 24 months of after-sale service. The Milwaukee warranty field says only “Manufacturer Warranty”.

Do all four list test leads in the box?

No. The CM87C, CM83E and DL379B each name test leads in their bullets or included items. The Milwaukee listing names no test leads.

Conclusion

These four digital clamp meters share a 600-level voltage ceiling on most listings, but they differ in their stated current figures, temperature ratings, jaw sizes and included items. The CM87C suits inrush readings, the CM83E suits a broad feature set, the DL379B suits hands-free industrial work, and the Milwaukee suits HVAC/R jaw size. Compare the stated figures against your conductors and circuits, and confirm any field a listing leaves blank or conflicts with its bullets.

Related guides

For more on clamp meters, see Best True RMS Digital Clamp Meter and Best AC DC Current Clamp Meter. For handheld clamp options, read Best Handheld Clamp and How Does a Current Clamp Work.