Nagano, Japan, 26 November 2025 — Hioki E.E. Corporation is proud to announce that its AC/DC Current Probes CT6833 and CT6834 have been selected as Winners of the 2025 Good Design Award, organized by the Japan Institute of Design Promotion.

The probes were recognized not only for their exceptional measurement performance and accuracy, but also for their user-centered usability, durability, safety, and refined visual design. Since receiving our first Good Design Award in 1985, this honor marks Hioki’s 82nd Good Design Award, reaffirming our commitment to excellence in design and technology.

For Hioki’s past awards and recognitions, click here

Award-Winning Products: AC/DC Current Probes CT6833 and CT6834

Developed for power measurement applications in the automotive field, the CT6833 and CT6834 are high-precision clamp-type current sensors engineered for next-generation vehicles.

Key advancements include:
•    DC accuracy of ±0.07%, comparable to through-type sensors
•    50% size reduction from previous models
•    Enhanced usability for installation in narrow engine compartments
•    Improved safety and reduced installation time, minimizing accidental contact
•    Reliable performance that supports testing based on the latest automotive standards

As essential tools for vehicle efficiency evaluation and electrification research, these probes support the advancement of automotive technology while contributing to reduced environmental impact.

Good Design Award Jury Comments

To accommodate current measurement inside vehicle engine compartments―areas with increasing component density and constant vibration and temperature fluctuations―the sensor tip has been redesigned to reduce height and thickness to one-third and volume to one-half of previous models. In addition, the clamp mechanism can be operated with fingertips even in tight spaces. This excellent design considers all aspects: the measuring instrument, the measurement target, and the user. It precisely meets the growing need for current measurement in environmentally advanced vehicles, an essential component of a sustainable society. (Note: The above remarks have been translated and rephrased for clarity.)

View the 2025 Good Design Award Gallery for CT6833 and CT6834

Comments from the Development Team

Designer – Tanaka, Business Promotion Dept., R&D Division
“We designed the probes with usability as the top priority. The sensor can be easily attached regardless of hand orientation, and the form eliminates interference from fingers or hands during operation. 
We also aimed to balance a sleek visual identity with long-term durability. Hioki Blue serves as a key accent colour for brand recognition, while yellow highlights the lock mechanism for clear visibility even in dark spaces. Our objective was to create a product customers can trust in every detail.”

Development Leader – Ikeda, SS Unit, R&D Division
“Our goal is to develop a slim clamp sensor that could measure in extremely narrow spaces where previous models could not be used. For real-vehicle applications, our team defined what ‘easy to operate’ truly means and refined the product through repeated testing across various vehicle types.
Beyond its compact form factor, we also improved measurement accuracy, repeatability, and reliability, achieving significant enhancements over previous models.”

View product pages: CT6833| CT6834

Hioki’s Design Philosophy

Hioki designs products that empathize with the user’s measurement experience and aim to enrich both daily life and society. Guided by our design policy, “COGNITIVE. A design that naturally fits people,” we continue to create solutions that elevate usability and human experience.

About the Good Design Award

Established in 1957, the Good Design Award is Japan’s leading design evaluation and promotion initiative, recognized internationally for highlighting excellence in design. The iconic “G Mark” represents outstanding design quality in products that contribute to improving quality of life and addressing emerging societal challenges.

Learn more about the award.

Contact us

For inquiries such as quotations, product demonstrations, or trial usage, please use Hioki’s contact form to be connected with your nearest Hioki representative.

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• Specifications, pricing, and other details are subject to change without notice.
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