Over 100,000 senders in service

The only proven, all-digital fuel senders.

With over 100,000 fuel sensors in service, our digital senders exceed 90,000 hours mean time to failure (MTTF) - making our fuel senders one of the most reliable aviation systems in existence.

EAA Airventure Oshkosh 2024

Visit us at Booth 3119 at EAA AirVenture in Oshkosh, Wisconsin!

Our products are trusted by

Quality Aircraft Manufacturers

Cirrus Aircraft logo
Cessna logo
VulcanAir Aircraft logo
Quest Aircraft logo
Mahindra Aerospace logo
Tecnam logo

We are the largest supplier of

Aviation Fuel Quantity Probes and Sensors.

CiES is the recognized leader in the design, development, certification, and manufacture of electronic sensor solutions for original equipment manufacturers, as well as direct-to-market consumer products. Through the creative application of cutting edge technologies, we create complex end-to-end solutions. Our solutions include IoT capability for mobile and cloud-based components and interfaces.

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new cies corporate headquarters building south

Latest CiES News

New CiES Corporate Headquarters.

We are delighted to announce the successful relocation of our organization to a new facility. Our dedicated team has worked diligently to ensure a seamless transition, and we are thrilled to unveil our new corporate headquarters.

Effective Friday, December 1st, our new address is:
63049 Lower Meadow Drive, Bend, Oregon 97701.

We would like to take a moment to express our sincere gratitude to each and every one of you for your unwavering support and loyalty. This significant move would not have been achievable without your continued support.



Through Our Partnership with AeroSpace Logic



Mindy with aircraft


CiES is a proud sponsor of pilot Mindy Lindheim and the Chasin' Tailwinds YouTube Channel

In this video, Mindy discusses what she loves about upgrading her 1957 Cessna 182 with new CiES fuel sensors (and a few other goodies).

"The flight from Atlanta to Florida (it was almost a three hour flight), I would have never done that without the EIS and my new CiES fuel senders. I would have had to make one or two fuel stops because I would have not been confident I had enough fuel on board."

"So this is a game changer for me. It saved me so much time coming down here to Florida, knowing how much fuel I had on board."

We're committed to high quality

So the Next Generation Can Trust Their Fuel Gauge.

We’re committed to providing an accurate, safe and reliable fuel level reading, as well as providing you with the highest level of service. Once you have installed magnetic field fuel sensing, your fuel level sender problems will be solved. When you see the difference, you’ll always choose us for your fuel and liquid level sending needs.

cies girl aviator in a brown leather bomber jacket, a gray scarf and a leather helmet folding her arms