Klein Tools CL900 clamp meter
Checked 2026-10-17 against Klein Tools's US product page by Rob, licensed electrician
The Klein Tools CL900 is a clamp meter, sold on its own. Klein Tools publishes CAT IV 600 V, CAT III 1,000 V safety rating, 2,000 A AC current (max range), 2,000 A DC current (max range), 1,000 V AC voltage (max range). In the box: Carrying Case, Instruction Manual, Straight Input Test Leads, Batteries. Source: Klein Tools's US product page, checked 2026-10-17.
Key specs
- Safety rating (IEC 61010 CAT)
- CAT IV 600 V, CAT III 1,000 V
- AC current, max range
- 2,000 A
- DC current, max range
- 2,000 A
- AC voltage, max range
- 1,000 V
- DC voltage, max range
- 1,000 V
- True-RMS
- Yes
- Jaw opening
- 2 in
- Display resolution
- 6,000 counts
- Batteries (cells)
- 2 x AAA
Not on Klein Tools's US product page for the CL900: Warranty. We do not guess.
In the box
- IncludedClamp meter
- IncludedTest leads: Straight Input Test Leads
- IncludedBatteries: Batteries
- IncludedCase or holster: Carrying Case
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Find CL900 prices on Amazon Find CL900 prices at Acme Tools Find CL900 prices at eBay New tab, US retailers. Search results open where no exact listing is on file. Check the listing says CL900; marketplace sellers vary.- US retailer, ships from the US
- Free shipping over $199
- Family owned since 1948
- Acme Tools, as published on its site, checked 2026-10-17
Compared with
All specs
| Safety rating (IEC 61010 CAT) | CAT IV 600 V, CAT III 1,000 V |
| AC current, max range | 2,000 A |
| DC current, max range | 2,000 A |
| AC voltage, max range | 1,000 V |
| DC voltage, max range | 1,000 V |
| True-RMS | Yes |
| Jaw opening | 2 in |
| Display resolution | 6,000 counts |
| Batteries (cells) | 2 x AAA |
| Capacitance, max range | 6,000 μF |
| Frequency, max range | 500 kHz |
| Low-impedance (LoZ) mode | Yes |
| Non-contact voltage detection | Yes |
| Min/Max recording | Yes |
| Drop protection | 6.6 ft (2 m) |
| Ingress protection | IP40 |
| Size | 10.39 x 3.9 x 1.7 in (L x W x H) |
| UPC barcode | 092644692352 |
Ratings are Klein Tools's published figures from its US product page, listed under Sources. Anything not on that page is left out rather than guessed. Check this against another model.
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Find the CL900 at Amazon
Quick answers
What is the CL900's safety (CAT) rating?
Klein Tools rates it CAT IV 600 V, CAT III 1,000 V. CAT IV covers the service entrance and utility side, CAT III distribution-level circuits such as panels and feeders; the lower of the meter's and the test leads' ratings is the one that applies. See our <a href="/cat-ratings-explained/">CAT ratings guide</a>.
Does the CL900 measure DC current?
Yes: Klein Tools lists a DC current range up to 2,000 A.
Is the CL900 true-RMS?
Yes, Klein Tools lists it as true-RMS, so readings on non-sinusoidal loads (drives, dimmers, electronic ballasts) are not averaged.
What batteries does the CL900 use?
2 x AAA (dry cells; no tool battery platform).
Does the CL900 come with test leads?
Yes: Straight Input Test Leads.
Owner reviews
Read the owner reviews on KleinTools.com
Videos from Klein Tools
Manuals and official documents
Sources
- Klein Tools US product page CL900, retrieved 2026-10-17
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Researched by Rob, licensed electrician (Australia). Found an error? Tell us.
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