Temp Clamp Meters: 3 Picks Compared
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A temp clamp meter is a clamp-style meter that can also read temperature. Only three of the twelve results in this research set are clamp meters, so this page compares those three and leaves out the rest. Each figure is taken from the listing data, checked on 11 October 2026, and shown as the seller states it.
Quick answer: if you need a temperature reading as well as current, the listings give that function for the Fieldpiece SC260 and the FNIRSI DMC-100. If you need only an AC clamp, the Klein CL120 has the simplest listed feature set. Compare the listed current range with the current you expect, and check the figures that conflict before you order.
The three clamp meters at a glance
| Meter | AC current range (as listed) | Temperature (as listed) | Weight (as listed) | Best fit (as listed) |
|---|---|---|---|---|
| Klein Tools CL120 (B08CP6GL49) | 400 amps (title) | Not stated | 9.76 ounces | AC clamp with the shortest listed feature list |
| Fieldpiece SC260 (B00KLYJG78) | Not stated | Yes | 0.27 g (see the conflicts table) | HVACR service in hot and cold environments |
| FNIRSI DMC-100 (B0DP2L9CFR) | 600 amps AC/DC (title) | Yes, with a probe | 6.72 ounces | Graph recording and a rechargeable battery |
How we chose these three
We kept the three results that name a clamp meter as the product. The other nine are multimeters, kWh meters, a tape measure and a dirty-electricity meter, so they are left out. Nothing on this page comes from personal use. Every figure is from the listing, and where two listing figures disagree, both appear below.
1. Klein Tools CL120 Digital Clamp Meter
The title gives an auto-ranging AC clamp of 400 amps. The listing gives an item weight of 9.76 ounces and dimensions of 8.45 x 3.51 x 1.51 inches. Its bullets say the clamp measures AC current and non-contact voltage, while AC/DC voltage, resistance and continuity are taken through the test leads. The bullets also list a backlit display, Max and Data Hold, auto power-off after 10 minutes, and 3 AAA batteries in the box. The test leads carry CAT III and CAT IV safety caps. The listing names an optional magnetic hanger (catalog numbers 69445 or 69417). The listing does not state a temperature or capacitance function.
Check the Klein Tools CL120 on Amazon
2. Fieldpiece Compact HVACR Clamp Multimeter SC260
The title lists True RMS, temperature, capacitance and a backlight. The bullets state VAC and AAC readings, non-contact voltage and amperage readings, a continuity warning and a diode test. An Auto Select mode switches to capacitance or resistance when it detects one. A swivel magnet is listed for hands-free use. The listing says the meter is designed for electrical HVACR service in hot and cold environments, and it gives no AC current range.
The specification table gives an item weight of 0.27 g and dimensions of 3.5 x 3 x 9.1 inches. The 0.27 g figure looks like a data-entry error for a meter of this size, and the listing gives no second weight to compare. Its style field reads Voltage Tester while its measurement type reads Multimeter.
Check the Fieldpiece SC260 on Amazon
3. FNIRSI DMC-100 Clamp Meter
The title gives 9999 counts and AC/DC current up to 600 amps. A bullet describes the same meter as 10000 counts. The listing says it measures voltage, resistance, capacitance, frequency and temperature, and adds non-contact voltage, live-wire, continuity and diode checks. It states real-time curve recording that stores 8 sets of real-time data and 30 sets of historical records, a 2 inch TFT display, and a 1500 mAh lithium battery that charges through Type-C.
The box holds a clamp meter, two multimeter pens, a temperature probe and a Type-C cable. The weight is listed as 6.72 ounces and the dimensions as 7.7 x 2.91 x 1.14 inches. The listing says voltage must be measured with the test leads, because the clamp jaws are for current only. It names UL 61010-1 and CE marks but gives no CAT category.
Check the FNIRSI DMC-100 on Amazon
Conflicting figures, side by side
| Item | Figure one | Figure two | Note |
|---|---|---|---|
| FNIRSI counts | Title and unit count: 9999 counts | Bullet and style field: 10000 counts | Confirm on the product page |
| Fieldpiece function | Style field: Voltage Tester | Measurement type: Multimeter; title: clamp multimeter | The listing does not explain the difference |
| Fieldpiece weight | 0.27 g in the specifications | Dimensions 3.5 x 3 x 9.1 inches, with no second weight | Likely a data-entry error |
Worked example: does the current range leave room?
Take a conductor you expect to read 350 amps. The Klein’s listed range of 400 amps leaves 50 amps of room (400 minus 350). The FNIRSI’s listed range of 600 amps leaves 250 amps (600 minus 350). The FNIRSI range is 1.5 times the Klein range (600 divided by 400).
The weights show the size trade-off. The Klein is listed at 9.76 ounces and the FNIRSI at 6.72 ounces, a difference of 3.04 ounces, or about 31 percent of the Klein’s weight. A listed range is a limit, not a safe-load figure, so match the range to the current you expect and keep the margin your job needs.
What the listings do not say
- None of the three listings gives an independent accuracy test. The Fieldpiece bullet describes its readings as higher accuracy, which is the seller’s claim and is reported as such.
- The Klein listing does not state a temperature range, and the Fieldpiece listing states no current range.
- The FNIRSI listing names UL 61010-1 and CE marks, but no CAT category for its inputs.
- No listing turns its battery figure into a run time. The FNIRSI lists a 1500 mAh battery and stops there.
Frequently asked questions
Does a temp clamp meter read temperature?
Two of the three listings state a temperature function. The Fieldpiece SC260 lists temperature in its title, and the FNIRSI DMC-100 lists temperature with a probe in the box. The Klein CL120 listing does not state one.
Which listing has the largest AC current range?
The FNIRSI DMC-100 title gives AC/DC current up to 600 amps, which is more than the 400 amps the Klein CL120 title gives. The Fieldpiece listing does not give a current range.
Why do the FNIRSI counts differ?
The title and unit count say 9999 counts, while a bullet and the style field say 10000 counts. The listing does not explain the gap, so confirm the figure on the product page before you buy.
Are these meters rated for mains work?
The Klein CL120 lists CAT III and CAT IV safety caps on its test leads. The FNIRSI lists UL 61010-1 and CE marks but no CAT category. The Fieldpiece listing states no category. Follow the manual and the rating on the meter itself.
Can a clamp meter read voltage?
Yes, but the listings say voltage is taken through the test leads. The FNIRSI listing states that the clamp jaws are for current only, and the Klein listing describes the same split between the clamp and the leads.
Conclusion
For a temperature reading, the listings point to the Fieldpiece SC260 or the FNIRSI DMC-100. For a plain AC clamp with a shorter feature list, the Klein CL120 is the choice. Check the listed current range against your load, and resolve the conflicting figures on the product page before you buy.
For more on clamp meters, see best true rms digital clamp meter, best ac dc current clamp meter, and best handheld clamp.
Klein CL120 on Amazon · Fieldpiece SC260 on Amazon · FNIRSI DMC-100 on Amazon
