Klein Tools CL800 clamp meter — Review

Klein Tools

Klein Tools CL800 clamp meter

★★★★½ 4.5/5 (3 customer reviews)
Overall Score4.5/5.0
Expert Verdict

The Klein Tools CL800 clamp meter is a highly capable, durable tool that meets the demands of professional electricians and serious hobbyists alike. Its advanced features and reliable performance justify the premium price, making it a worthwhile investment for those who need precision and versatility in one device.

Estimated price · USD
$219.95 ↓ 11% vs 12-mo high
12-mo low
$200.75
12-mo avg
$224.50
12-mo high
$246.50

We earn a small commission on qualifying purchases via affiliate links — at no additional cost to you.

Key features
  • True RMS AC/DC voltage and current measurements
  • Measures resistance, continuity, frequency, capacitance, and temperature
  • Non-contact voltage detection for added safety
  • Large backlit digital display with data hold
  • Auto-ranging and auto power-off to conserve battery
  • Rugged design with rubber overmold for impact resistance
  • Measures up to 1000A AC current with jaw size of 1.18 inches
✓ Pros
  • Accurate True RMS readings suitable for complex electrical systems
  • Wide range of measurement functions covering most electrician needs
  • Sturdy construction withstands job site conditions
  • Easy-to-read backlit display improves usability in dark spaces
  • Non-contact voltage detection adds a layer of safety
  • Compact and ergonomic design for comfortable use
  • Good battery life with auto power-off feature
✗ Cons
  • Slightly higher price point compared to basic clamp meters
  • No Bluetooth or wireless connectivity for data logging
  • Temperature measurement accuracy could be improved

Full Review

The Klein Tools CL800 clamp meter is a versatile and reliable electrical testing instrument designed for professional electricians and serious DIY enthusiasts. It offers advanced measurement capabilities that go beyond standard clamp meters, including True RMS for accurate readings on non-linear loads and a wide range of functions covering AC/DC voltage, current, resistance, continuity, frequency, and capacitance. Its large, backlit display ensures readability in low-light conditions, making it suitable for various work environments.

Built with durability in mind, the CL800 features a rugged design with rubber overmolding for improved grip and drop protection. It includes a built-in non-contact voltage detector for quick and safe voltage presence checks. The meter’s auto-ranging functionality and data hold feature simplify testing and help users record results easily. Additionally, the unit supports testing of HVAC systems with temperature measurement capabilities.

This clamp meter is powered by batteries with an efficient power-saving auto-off feature, extending battery life during prolonged use. While it offers many premium features, it remains user-friendly with intuitive controls and a clear interface. Overall, the Klein Tools CL800 is a solid choice for anyone needing precise, multi-function electrical testing in a durable, portable package.

Price history Estimated

Modelled 12-month price trajectory in USD. Points are smoothed estimates — see the partner store for the live price.

$246$235$224$212$201$219.95M-11M-9M-7M-5M-3M-1Now
Now
$219.95
12-mo low
$200.75
12-mo avg
$224.50
12-mo high
$246.50

We earn a small commission on qualifying purchases via affiliate links — at no additional cost to you.

Customer Reviews

Michael D.March 2025
★★★★★
Reliable and Accurate Clamp Meter
I've been using the Klein CL800 on various residential and commercial jobs, and it consistently delivers precise readings. The True RMS function is a game changer for dealing with modern electrical systems. It's built tough and the backlit display is very handy in dimly lit panels.
Sarah P.January 2025
★★★★☆
Great Features but a Bit Pricey
The CL800 has all the functions I need and more, especially the non-contact voltage detection which adds safety. It’s a bit more expensive than entry-level models but worth it for the quality and accuracy. Would have liked wireless data logging, though.
James K.February 2025
★★★★☆
Solid Performance with Minor Drawbacks
This meter is very durable and easy to use. The temperature readings are decent but not as accurate as I expected. Overall, it’s a solid tool for electricians looking for a multi-function clamp meter.