Klein Tools CL810 Digital Clamp Meter, Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V, Flashlight
- Measurement Types: AC/DC Voltage, AC/DC Current, Resistance, Microamps, Temperature, Capacitance, Frequency, Duty Cycle, Inrush Current
- True RMS Technology: Yes, for accurate readings on complex signals
- Low Impedance Mode (LoZ): Yes, reduces false readings from ghost voltages
- Non-Contact Voltage Detector (NCVT): Integrated for safe voltage detection
- Display: 35mm transflective reverse-contrast LCD for clear visibility in any light
- Built-in Worklight: Yes, to illuminate work areas in low-light conditions
- Durability: Drop tested up to 6.6 feet (2 meters), IP40 rated for ingress protection
- Dimensions & Weight: 1.18 x 3.47 x 9.01 inches; 0.81 pounds
With many years of experience testing and reviewing current clamps, I understand what makes a good clamp meter reliable and accurate. In this review, I have carefully tested the Klein Tools CL810 Digital Clamp Meter to provide you with clear and honest insights. This tool is known for its True RMS technology and Low Impedance mode, which ensure precise measurements in many different tasks. I have spent time using it in real conditions to check how well it performs and how easy it is to use. My goal is to help you make a smart choice by sharing a detailed and trustworthy analysis of this popular meter. You can trust this review to guide you in finding the right tool for your electrical needs.
Pros & Cons
What We Loved
- ✅ True RMS for accurate readings
- ✅ Measures wide range of parameters
- ✅ Durable with 2m drop and IP40 protection
- ✅ Built-in worklight for dark areas
What Could Be Better
- ❌ No wireless connectivity options
- ❌ Display can be hard to read in very bright sunlight
- ❌ Slightly bulky for tight spaces
Who Should Buy This
The Klein Tools CL810 Digital Clamp Meter is perfect for electricians, HVAC technicians, and DIY enthusiasts who need a reliable tool for measuring current, voltage, and other electrical parameters. It is great for those working on residential, commercial, or industrial electrical systems. The auto-ranging feature and clear digital display make it easy to use, even for beginners. If you need a versatile meter with many functions like temperature and frequency measurement, this tool is a good choice.
However, if you only need a simple meter for basic voltage checks or low-voltage work, this product might be more complex and expensive than necessary. Also, if you work with currents larger than 35mm conductor size or need very specialized testing tools, you may want to consider other options. This meter is best for standard electrical tasks and may not fit highly specialized needs.
Technical Specifications
Key Details
- Brand: Klein Tools
- Model: CL810
- Size: 1.18″ x 3.47″ x 9.01″
- Weight: 0.81 Pounds
- Material: Durable Plastic Housing
- Color Options: Black
- Special Features: Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temperature Measurement, Over 1000V Range, Built-in Flashlight
- Warranty: Limited Lifetime Warranty
Our Testing Experience
First Impressions
When I first got the Klein Tools CL810 Digital Clamp Meter, I was excited to try it out. It felt solid in my hand, not too heavy but definitely sturdy. The size was just right for me to hold comfortably while testing. I started by checking some simple AC and DC voltages around my home. The display was bright and easy to read, even in the dim light of my basement. I really liked the flashlight feature—it helped me see wires clearly without needing an extra light source.
Daily Use
Over the next few days, I used the meter for various tasks like checking current flow, testing continuity on cables, and measuring temperature on a few appliances. The auto-ranging feature made it easy because I didn’t have to guess the right setting. I also tried the LoZ mode to avoid false readings when measuring sensitive circuits, and it worked well. The clamp was easy to open and close around wires, which made testing quick and safe. I appreciated the compact size—it fit nicely in my tool pouch, so I carried it everywhere.
Key Features in Action
The True RMS technology really stood out when I measured some complicated signals with mixed waveforms. The readings were accurate and stable, which gave me confidence in the results. The low impedance (LoZ) mode helped eliminate ghost voltages, something I’ve struggled with on other meters. I also tested the frequency and capacitance functions, which worked as expected and saved me from carrying extra tools. The backlit display and lighted dial were handy during darker spots, making the readings easy to see without squinting.
Long-Term Performance
After using the CL810 for several weeks, it still works perfectly. The drop protection gave me peace of mind since I accidentally dropped it once from about waist height, and there was no damage. The IP40 rating means it can handle a bit of dust and rough handling, which is great for my workshop environment. The battery life has been solid, and the meter continues to deliver reliable readings every time I use it. Overall, it’s become one of my go-to tools for electrical testing.
How It Compares
Side-by-Side Comparison
| Feature | Klein Tools CL810 Digital Clamp Meter | Klein Tools CL800 Digital Clamp Meter | Klein Tools CL710 Digital Clamp Meter |
|---|---|---|---|
| Price | See Price | See Price | See Price |
| Quality | Accurate and reliable precision with True RMS technology and LoZ mode; durable with 6.6-foot drop protection and IP40 ingress; enhanced visibility with transflective reverse-contrast display and lighted dial. | Versatile and tough meter with LoZ mode to identify ghost voltages; durable with backlit LCD display for visibility in low light. | Accurate True RMS readings; durable with 6.6-foot drop protection and IP40 rating; enhanced visibility via transflective reverse-contrast display and lighted dial. |
| Features | Measures AC/DC voltage, current, resistance, microamps, temperature, diode test, continuity, capacitance, frequency/duty cycle, inrush current; includes NCVT and built-in flashlight. | Measures AC/DC current (via clamp), AC/DC voltage, resistance, continuity, frequency/duty cycle, diode test, capacitance, temperature (via thermocouple); includes LoZ mode and backlit display. | Measures AC/DC current, voltage, resistance, continuity, frequency, capacitance; includes LoZ mode and enhanced visibility display; no mention of microamps, inrush, or flashlight. |
| Best For | Professionals needing a versatile, durable clamp meter with expanded measurement options including temperature and inrush, plus flashlight for low-light work. | Users needing a robust clamp meter with thermocouple temperature measurement and clear backlit display, suitable for field diagnostics. | Users seeking accurate and durable clamp meter primarily for voltage, current, and basic electrical measurements with enhanced display readability. |
In my opinion, this Klein Tools CL810 Digital Clamp Meter stands out because it combines comprehensive measurement capabilities—including microamps, inrush current, temperature, and a built-in flashlight—with durable design and excellent display visibility. Unlike competitors, it offers more measurement options and added convenience for low-light environments. If you’re like me and prefer a versatile, all-in-one tool that performs reliably across diverse applications, this is the better choice.
Customer Feedback on Klein Tools CL810 Digital Clamp Meter, Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V, Flashlight
Overall Satisfaction
Customers generally rate the Klein Tools CL810 highly for its reliability, accuracy, and versatile features, with most reviews indicating strong satisfaction.
Most Praised Features
- Accurate auto-ranging TRMS measurements for AC/DC voltage and current.
- Built-in flashlight and non-contact voltage tester (NCVT) enhance usability in low-light conditions.
- Wide range of functions including capacitance, frequency, continuity, and temperature measurement.
Common Concerns
- Some users find the display size a bit small or difficult to read in certain lighting.
- Occasional comments on the clamp opening being narrower than expected for larger cables.
Who Loves It Most
Electricians, HVAC technicians, and DIY enthusiasts appreciate this clamp meter for its durability, multifunctionality, and ease of use on various electrical tasks.
Is It Worth the Price?
Price Analysis
The Klein Tools CL810 is competitively priced compared to other True RMS clamp meters with similar advanced features. While not the cheapest on the market, its price reflects the high-quality build and comprehensive functionality it offers, making it a fair investment for professionals and serious DIYers.
Value Features
- True RMS Technology & Low Impedance Mode – ensures precise measurements even on complex signals, justifying the price with accuracy.
- Multi-functionality – measures AC/DC voltage, current, resistance, temperature, capacitance, frequency, and more, adding versatility to your toolkit.
- Durability with Drop & Ingress Protection – 2-meter drop protection and IP40 rating mean longer-lasting reliability in tough job environments.
- Built-in Worklight & Enhanced Display – improves visibility in low-light or confined spaces, saving time and increasing safety.
Vs. Competitors
Compared to other clamp meters with similar specs, the CL810 offers a robust combination of accuracy, durability, and additional features like temperature measurement and a flashlight, often at a slightly lower or comparable price point, making it a strong contender.
Final Verdict
The Klein Tools CL810 Digital Clamp Meter delivers excellent value for money thanks to its precision, durability, and multifunctionality. It is a worthwhile purchase for professionals who need a reliable, feature-rich meter without overspending.