
793950398425 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $125.00 | Condition is New, Extech EX840 1000 A Clamp Meter with IR Thermometer NEW, shipping cost = $13.59 | 99.0% |
![]() | $289.00 | Top Pick! Condition is New, Extech EX840A: 1000A True RMS AC/DC Clamp Meter with IR, FREE SHIPPING | 100.0% |

The EXTECH EX840A Clamp Meter is a versatile and powerful diagnostic tool designed for electrical professionals and technicians. With a measurement range of 1000 Amps AC/DC, this clamp meter is ideal for measuring current flow in wires and cables, even in the most challenging industrial environments.
The EX840A is built with Extech's advanced True-RMS technology, ensuring accurate readings on both AC and DC currents, as well as on distorted waveforms. This feature is particularly useful when measuring non-sinusoidal loads or when working with power supplies that produce non-linear currents.
The meter's rugged design includes a drop-tested housing to protect against impacts and a waterproof design to withstand harsh conditions. The large, backlit display provides clear and easy-to-read measurements, while the selectable display units allow for flexibility in different applications.
The EX840A also features a data hold function, which freezes the display reading for a set period of time, enabling users to record and compare measurements. Additionally, the auto power-off feature helps conserve battery life when the meter is not in use.
The clamp jaws of the EX840A are designed to open wide to accommodate large conductors, and they are equipped with a jaw tip indicator light, which illuminates when the jaws are closed on a conductor, ensuring accurate and safe measurements. The meter also includes a low battery indicator, a low voltage warning, and overload protection to safeguard against potential hazards.
In summary, the EXTECH EX840A Clamp Meter is a reliable and accurate diagnostic tool for electrical professionals and technicians, featuring a wide measurement range, advanced True-RMS technology, rugged design, and various safety features. It is an essential tool for troubleshooting and maintaining electrical systems in industrial and commercial applications.
Extech EX840A 1000A AC/DC Clamp Meter: A Comprehensive Analysis
Introduction:The Extech EX840A is a 1000A AC/DC clamp meter, a versatile and essential tool for electricians and electronics technicians. In this analysis, we will discuss the key features, advantages, and disadvantages of this clamp meter to help you make an informed purchasing decision.
Key Features:1. High current capacity: The Extech EX840A can measure current up to 1000 Amperes in both AC and DC modes.
2. Wide voltage range: It measures voltage from 1.2V to 1000V AC and DC.
3. Data Hold and Max/Min functions: These features allow users to record the highest and lowest readings for further analysis.
4. Backlit LCD display: The large, backlit display ensures easy reading in various lighting conditions.
5. CAT IV 600V safety rating: This clamp meter meets the highest safety standards for electrical testing.
Advantages:1. High accuracy: The Extech EX840A ensures accurate readings, making it a reliable tool for professional electricians.
2. Durable and rugged design: The meter features a durable, water-resistant housing and a robust clamp jaw.
3. Versatile: With its wide voltage and current range, the Extech EX840A can cater to various electrical testing needs.
4. User-friendly: Its intuitive design, large display, and easily accessible functions make it simple to use.
Disadvantages:1. Size and weight: The Extech EX840A is relatively large and heavy compared to other clamp meters, which may make it less portable.
2. Expensive: The price point of the EX840A is higher than some other clamp meters in the market.
3. Limited features for advanced users: Some advanced features, like temperature measurement or frequency measurement, are not available in this clamp meter.
Conclusion:The Extech EX840A 1000A AC/DC Clamp Meter is a reliable, accurate, and versatile tool for electrical testing. Its high current capacity, wide voltage range, and rugged design make it an excellent choice for professional electricians. However, its size, weight, and price might be disadvantages for some users. Ultimately, the decision to buy the Extech EX840A depends on your specific electrical testing needs and budget.
Recommendation:If you are a professional electrician or work in an industrial setting requiring high current and voltage measurements, the Extech EX840A 1000A AC/DC Clamp Meter is a solid investment. However, for hobbyists or electricians working in smaller settings, more portable and affordable clamp meters might be a better fit. Consider your needs, budget, and the specific electrical testing requirements before making a purchasing decision.
Details:
Extech EX840A: 1000A true rms ac/dc clamp meter with ir: the EX840A clamp meter features a unique, built-in, non-contact infrared thermometer laser pointer to monitor temperature and locate hot spots on motors electrical devices. Its ergonomically designed double-molded housing offers a better grip for one-handed operation and the 43mm 1.7 in diameter jaw opening is large enough conductors up to 750 Cm or two 500. A large 6000 count LCD display with bright back lighting allows you to see the reading in dim light.
specifications testmultimeters:
- brand: Extech
- mpn: Ex840a
- part type: Clamp Meter
- upc: 793950398425
returns testmultimeters:
- time: 30 days
- policy: returns accepted
- method: money back
- paid by: seller
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
payments testmultimeters:
- wallet: google-pay
- other
- credit card: visa
shipping testmultimeters:
- service: ups 2nd day air
- type: fixed
- transit: 3-3 days
- carrier: ups
- class: expedited
seller testmultimeters:
- # reviews: 503
- rating: 100.0%
- city: louisville, kentucky
offer testmultimeters:
- sold #: 14
- availability: in stock
- options: ship-to-home
- prices: $125.00–$289.00
- item condition: New
- started: february 17, 2026
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