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Klein Tools
Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ)
$152.54
Best Clamp Meters · head-to-head
Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
A sourced, side-by-side comparison. Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) is cheaper at $152.54. Every spec and price links to its source.
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Southwire
Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) | Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter |
|---|---|---|
| US price | $152.54 | — |
| Brand | Klein Tools | Southwire |
| Released | — | — |
| Ac current range | 600 A | 400 A |
| Dc current range | 600 A | 400 A (per user-facing marketing copy and verified purchaser reviews on southwire.com describing DC clamp-amp use; exact numeric DC accuracy table not published on the fetched product page) |
| Jaw opening | 1.38 in (3.5 cm) | — |
| Ac dc voltage range | 1000 V AC/DC | — |
| True rms | Yes | Yes |
| Resistance continuity | 60 MΩ max, with continuity | — |
| Capacitance | 6000 µF | Yes |
| Temperature | -14°F to 1000°F (-26°C to 538°C), via included thermocouple | Yes |
| Cat safety rating | CAT IV 600V / CAT III 1000V | CAT III 600V |
| Display count | 6000 | — |
Sources — Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ): digikey.com (verified 2026-08-05). Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter: southwire.com (verified 2026-08-05).
What's the difference between the Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) and Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter?
Where the two actually differ on the specs we track (5 of 10). Matching specs are omitted.
- Ac current range: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 600 A vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 400 A
- Dc current range: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 600 A vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 400 A (per user-facing marketing copy and verified purchaser reviews on southwire.com describing DC clamp-amp use; exact numeric DC accuracy table not published on the fetched product page)
- Capacitance: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 6000 µF vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter true
- Temperature: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) -14°F to 1000°F (-26°C to 538°C), via included thermocouple vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter true
- Cat safety rating: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) CAT IV 600V / CAT III 1000V vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter CAT III 600V