
TNP401 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $72.20 | Condition is New, Techni-Pro TNP401 - True RMS AC/DC Clamp Meter, FREE SHIPPING | 99.8% |

The Techni-Pro TNP401 AC/DC Clamp Meter is a versatile and essential tool for electricians, technicians, and DIY enthusiasts. This clamp meter is designed to measure both alternating current (AC) and direct current (DC) electrical values, making it a comprehensive solution for various electrical testing applications.
The TNP401 features a digital display screen that is backlit and easy to read, ensuring accurate readings even in low-light conditions. The high-resolution LCD screen displays various electrical parameters such as current, voltage, resistance, and frequency. The meter also comes with an auto-ranging function, which automatically selects the appropriate range for the measurement being taken, eliminating the need for manual range selection and reducing the chances of errors.
The clamp jaw of the TNP401 is designed to open up to 10.5 inches (26.6 cm), allowing it to accommodate large conductors and cables. The jaw is also designed to provide a secure grip on conductors up to 500 kcmil (2000.5 A), making it suitable for use in heavy-duty industrial applications. The clamp jaw is designed to minimize the amount of pressure required to close it, making it easier to use and reducing the risk of injury.
The TNP401 also comes with various safety features, including a CAT III 600V safety rating, overload protection, and a low battery warning. The meter also has a data hold function, which allows users to lock in and save readings for later reference.
The TNP401 comes with a durable and ergonomic design, featuring a rubberized housing that provides a comfortable grip and protects the meter from drops and impacts. The meter is also compact and lightweight, making it easy to carry and transport between jobsites.
Overall, the Techni-Pro TNP401 AC/DC Clamp Meter is a reliable and versatile electrical testing tool that is suitable for a wide range of applications. Its large clamp jaw, digital display screen, and auto-ranging function make it easy to use and accurate, while its safety features and durable design ensure that it can withstand the rigors of industrial use.
The Techni-Pro TNP401 AC/DC Clamp Meter is a versatile and handy tool for electrical measurements. Here are some pros and cons that can help you decide if this clamp meter is the right choice for your needs.
Pros:1. Wide Measuring Range: The TNP401 has a wide measuring range, which can handle current measurements up to 400 Amps AC and 600 Volts AC/DC.
2. Data Hold and Peak Hold Functions: These features allow you to lock in readings and compare maximum and minimum values for accurate measurements.
3. CAT III 600V Safety Rating: This clamp meter meets the safety requirements for measuring electrical currents up to 600 volts, making it suitable for industrial and commercial applications.
4. Backlit Display: The backlit display makes it easy to read measurements in low-light conditions, which is a significant advantage for electrical work in basements or dimly lit areas.
5. Auto-Ranging: This feature simplifies the measurement process by automatically selecting the appropriate measurement range based on the input.
Cons:1. Size and Weight: The TNP401 is larger and heavier than some other clamp meters, making it less portable for field work or tight spaces.
2. Buttons: Some users have reported that the buttons on the TNP401 are not as responsive as they would like, which can be frustrating during measurements.
3. No Bluetooth Connectivity: The TNP401 does not offer Bluetooth connectivity, which may be a disadvantage for users who prefer to store and analyze data using smartphones or other devices.
Conclusion:The Techni-Pro TNP401 AC/DC Clamp Meter is a robust and feature-rich tool for electrical measurements. Its wide measuring range, data hold and peak hold functions, CAT III 600V safety rating, and backlit display make it an excellent choice for industrial and commercial applications. However, its larger size and weight, less responsive buttons, and lack of Bluetooth connectivity may be disadvantages for some users. Ultimately, the decision to buy this clamp meter depends on your specific needs and preferences.
Recommendation:If you require a clamp meter for industrial or commercial applications with a wide measuring range, data hold and peak hold functions, and a CAT III 600V safety rating, the Techni-Pro TNP401 AC/DC Clamp Meter is an excellent choice. However, if you need a more portable clamp meter with Bluetooth connectivity or responsive buttons, you may want to consider other options.
Details:
It features a 1.57' jaw opening 40mm, 6000-count backbit digital display, and rugged, double-molded plastic housing. Please consider troubleshooting prior to making a return request. Techni-Pro TNP401 true rms clamp meter maximum voltage : 600v ac/dc maximum current: 1000a ac/dc1.57' jaw opening 40mm testing functions include ac/dc voltage and current, resistance, temperature, capacitance, frequency, continuity, diode testing clamp meter the is a true rms, auto-ranging meter. Non-contact ac voltage detection.
Data hold and min/max. Product layout photos are greatly appreciated. The TNP401 performs a number of testing functions including ac/dc voltage and current, resistance, temperature, capacitance, frequency, continuity, diode testing.maximum ranges are as follows: voltage : 600v ac/dc current: 1000a ac/dc resistance: 60 mo temperature: 1400 capacitance: 4000 frequency: 10khz.
specifications metiprobe:
- brand: Techni-pro
- mpn: Tnp401
- part type: Clamp Meter
- features: True Rms Clamp Meter
- item width: 1.00
payments metiProbe:
- other
- wallet: paypal
- credit card: diners-club
offer metiProbe:
- started: march 24, 2026
- options: ship-to-home
- sold #: 7
- price: $72.20
- item condition: New
- availability: in stock
returns metiProbe:
- time: 30 days
- paid by: seller
- policy: returns accepted
- method: money back
shipping metiProbe:
- transit: 2-6 days
- service: economy
- type: fixed
- class: economy
general metiprobe:
- category: Home & Garden > Workshop Equipment > Measuring Layout Tools > Meters, Sensors Probes
seller metiProbe:
- city: worcester, pennsylvania
- # reviews: 14072
- rating: 99.7%
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- TNP477: CLAMP METER PROBE, Techni Pro
