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Internet # 206517428

Model # CL800

Store SKU # 1001593304

Store SO SKU #1001572149

Top Rated

600 Amp AC/DC True RMS Auto Ranging Digital Clamp Meter

$149.97
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  • Clamp Meter measures AC/DC voltage, temp, resistance, continuity
  • Amp Clamp with automatically ranging TRMS for high accuracy
  • Electronic Tester is CAT IV 600 V and CAT III 1000 V safety rated
  • View More Details

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Product Details

About This Product

Klein Tools CL800 Electrical Tester is an automatically ranging true root mean squared (TRMS) digital clamp meter that measures AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test-leads, and temperature via a thermocouple probe. It also features a Low Impedance (LoZ) mode for identifying and eliminating ghost or stray voltages. Klein Tools' Test and Measurement product line was exclusively designed from the ground up by electricians for electricians. Years of field research, combined with extensive input from electricians across America, inspired the development of meters and electrical testers loaded with innovative, time-saving features.

Highlights

Product Information

Internet # 206517428

Model # CL800

Store SKU # 1001593304

Store SO SKU #1001572149

Specifications

Dimensions

Product Depth (in.)

1.54 in

Product Width (in.)

3.82 in

Details

Accuracy Measurement

True-RMS

Category Rating

IV

Features

Audible Alert, Backlit, Data Logging, Interchangeable Leads

Functions Measured

Amperage, Capacitance, Continuity, Frequency, Resistance, Voltage

Included

Batteries, Case

Maximum AC Current (A)

600

Maximum AC Voltage

1000

Maximum DC Voltage

1000

Maximum Frequency (MHz)

0.5

Maximum Resistance (ohms)

60M

Number of Functions

18

Power Source

Battery Operated

Range

Auto Ranging

Returnable

90-Day

Warranty / Certifications

Certifications and Listings

CSA Certified

Manufacturer Warranty

Please refer to the attached warranty document in the Product Overview section above under Info & Guides.

Questions & Answers

What size battery does it use?
ByApr 30, 2026
1 Answer | 
Answer This Question

The Klein Tools Cat. No. RT250, GFCI Receptacle Tester with LCD, uses (2) AAA batteries, 2 batteries are included with the purchase of this product.

By|May 1, 2026


    Will this meter measure dc milliamps
    ByFeb 25, 2026
    1 Answer | 
    Answer This Question

    The Klein Tools Cat. No. CL800 Digital Clamp Meter will measure DC Milliamps. Please refer to the chart below to determine if it fits your desired range. AC Current (A AC) 60.00A 10mA ±(2.0% + 8 digits) AC Current (A AC) 600.0A 100mA ±(2.0% + 5 digits) DC Current (A DC) 60.00A 10mA ±(2.0% + 8 digits) DC Current (A DC) 600.A 100mA ±(2.0% + 5 digits) Frequency Range: 50 to 60Hz

    By|Mar 2, 2026


      I have this meter, it won't turn on anymore. Changed the batteries. Is there a fuse somewhere to replace?
      ByJan 24, 2026
      1 Answer | 
      Answer This Question

      None of Klein Tools' clamp meters have replacement fuses. If your item falls within our warranty period, please contact us for replacement. Otherwise, we recommend the updated CL810 600A AC/DC Auto-Ranging TRMS Clamp Meter with Worklight as a replacement.

      By|Jan 26, 2026


        What's the minimum amperage you can test with the clamp
        ByOct 26, 2025
        1 Answer | 
        Answer This Question

        The Klein Tools Cat. No. CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ), Auto Off can measure both AC/DC current from 10mA-600A, as does the updated model, Cat. No. CL810.

        By|Oct 27, 2025


          Will this show multiple errors at once. For example if a receptacle is ungrounded and hot/neutral wires reversed?
          BySep 7, 2025
          1 Answer | 
          Answer This Question

          Klein Tools Cat. No. RT250 will show 1 error at a time.

          By|Feb 8, 2026

            (1)

            Are any of the question asked already going to be answered? or am I just wasting my time even looking? Should I just find a Fluke dealer?
            ByJan 29, 2025
            2 Answers | 
            Answer This Question

            You hit the arrow down option and the answer will show

            By|Jul 20, 2025

              If you have questions about the Klein Tools model # CL800 Clamp Meter please ask them here or contact Klein Tools Customer Service 1-800-553-4676

              By|Jan 29, 2025


                what feature will log the highest amps or volts for bursts such as measuring welding current only while the current is flowing?
                ByJan 17, 2025
                1 Answer | 
                Answer This Question

                When the "MAX/MIN" button is pressed, the meter keeps track of the Maximum and Minimum values and the difference between the Maximum and Minimum values as the meter continues to take samples. 1. When measuring, press "MAX/MIN" button to toggle between the Maximum value (MAX) and the Minimum value (MIN). If a new Maximum or Minimum occurs, the display will update with the new value. 2. Press "MAX/MIN" button for more than one second to return to normal measuring mode. For the full features/instructions please see the Instructions/Assembly document under Additional Resources From the Manufacturer

                By|Jan 21, 2025


                  Dose it measure DC
                  ByNov 26, 2024
                  1 Answer | 
                  Answer This Question

                  Klein Tools CL800 is an automatically ranging true root mean square (TRMS) digital clamp-meter that measures AC/DC current via the clamp, measures AC/DC voltage, resistance, continuity, frequency, capacitance, and tests diodes via test-leads, and temperature via a thermocouple probe.

                  By|Jul 17, 2025

                    (1)

                    Viewing 1-8 of 86

                    Customer Reviews

                    4.7 out of 5

                    • 4.7 out of 869 reviews
                    • 91% recommend this product
                    Filter by:
                    Showing 1-10 of 869 reviews
                    Light weight and accurate
                    by
                    • Verified Purchase
                    This meter has e lot of feature that industrial electrician needs.
                    by
                    • Verified Purchase
                    Such a solid and feature rich multimeter
                    This thing is rock solid. Makes fluke meters feel like toys. Definitely has a noticable rigidity and quality feel that most clamp meters lack. Flukes and ideal meter feel cheap. They measure fine and all but don't have the robust build that this does. Combine the build quality with the accuracy and rich feature set and you can't beat Klein for the money either.
                    by
                    • Verified Purchase
                    • Recommended
                    2 found this review helpful
                    Great meter with lots of features for the price
                    After reading the reviews from others and looking at the price for features this meter has I went with the Klein CL800 for my A/C and electrical jobs. So far it works great and the accuracy is fine for field work.
                    by
                    • Verified Purchase
                    • Recommended
                    Ok meter, hard to read screen and no tone with NCV
                    Good feature set and feels good in the hand. I just hate how faded the screen gets at an angle or when I turn on the backlight. The last thing I want to do is have to stick my head in a box to view the screen or twist some wire. Also the NCV has no tone alarm, so strange. Normally I'm a big fan of Klein but I'm a pass on this tool. Fluke or Ideal clamp meters for me.
                    by
                      3 found this review helpful
                      quick & easy. [HD needs to increase review limit]
                      voltage reading is my reason for getting this. a 2-3' extension makes perfect .. i added outlets & switches years ago & getting little shocks ,, but all is good finally with this tool . i suspect it was static carpet shocks. HD double write limit
                      by
                        • Recommended
                        This is a great tester with which you can test...
                        This is a great tester with which you can test and diagnose variety of problems such as improper wiring, faulty grounds, timing for tripping of GFCI receptables and most importantly - voltage fluctuations. This is particularly helpful when you need to diagnose and service generators, flickering lights due to deteriorating connections on your main panel and so on. For the price, it is a must have in every service van and toolbelt and a very good addition to a home's repair kit.
                        by
                        2 found this review helpful
                        Good for voltage, amperage, etc., but not for temperature.
                        Overall, the clamp meter is of good quality with acceptable results, when comparing it to the Klein MM700 multimeter. The discrepancy comes with using the thermocouple on the clamp meter. There was a sizable, erroneous difference when measuring ambient air temperature in a dwelling. My MM700 read 66.0F while the CL800 read 152.3. Upon switching my banana adapter and thermocouple from the MM700 to the CL800, the ambient temperature was only 0.7 degrees different than my multimeter. I contacted Klein Tools, informing them that I only wanted a new thermocouple and adapter. Unfortunately, they wanted the entire clamp meter with accessories back. Klein Tools, being a solid company, sent me a whole new CL800 clamp meter within 4 days. While there is some difference in temperature readings with the new CL800, I will use it more for voltage/amperage readings. As for the GFCI tester, I love it!
                        by
                        • Verified Purchase
                        • Recommended
                        1 found this review helpful
                        GFCI Testting Tool
                        Perfect tool , easy to use
                        by
                        • Verified Purchase
                        • Recommended
                        All I need in one
                        [This review was collected as part of a promotion.] I bought this tool almost 5 years ago and it have been worthy every single penny. I can work with AC and DC current at anytime and anywhere. My fellas have Fluke which is expensive by the way and they are always looking to borrow my meter. If you are looking to buy a meter this buddy right here is your best option.
                        by
                          • Recommended
                          Showing 1-10 of 869 reviews

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                          Product Snapshot

                          Ideal for professionals and DIYers needing accurate readings with TRMS, LoZ, and temperature measurement. CAT IV safety rated.
                          Ideal for professionals wanting compact, powerful testing with reliable voltage detection.
                          Ideal for electricians needing accurate readings in tough environments with True-RMS and a CAT III/IV safety rating.

                          True RMS (TRMS)

                          Low Impedance (LoZ)

                          Temperature Measurement

                          Auto-Ranging

                          Data Logging