Some of the best customer service in the avionics network that I’ve had the pleasure of dealing with. [I chose EI because of the] features, simplicity, and the user-friendly platform.
P-101 CHT Probe
Questions?
8am–4:30pm PST M–F
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Product Overview
Reliable Probes

An Engine Monitor is only as good as its probes. That’s why Electronics International (EI) has taken the development of its probes, connectors, and accessories very seriously. EI has been designing and manufacturing probes for over 30 years. All of our probes have been designed in-house by our engineering team. Our team has studied, tested and designed temperature probes since the 1970′s. They have written research documents such as The Pilots Manual – Leaning and Diagnosing Engine Problems and Accurate CHT Measurements. Just as an Engine Monitor is only as good as its probes, a probe is only as good as its connector. That’s why EI’s engineering team developed EI’s proprietary OLC-2 connector. The OLC-2 connector greatly increases reliability and reduces installation errors as compared to traditional type connectors. Whether you’re looking for a reliable and accurate CHT, EGT, TIT or various other probe types, EI has what you need. With more than a half million probes sold and tested you can count on EI’s reliability.
Prices
Retail Prices
Packages include:
- P-101 CHT Probe
- Installation Instructions
Description
Package
Retail Price
P-101 CHT Probe*
-
$128
* To be used with the A-101 CHT Adapter, 700°F Max.

Specifications
Specifications
Type
Military Bayonet
Operating Temp Range
-80°F to 700°F Max.
FAA Certifications
TSO’d, PMA’d
Common Uses
CHT Readings
Configuration
Type K, Ungrounded
Operating Range
700°F Max
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Tach fits my panel nicely, was easy to install.
Good equipment at a good price. I have used your products before and have had great success.
- Customer
Ryan M. from Oregon
- Aircraft
Cessna 172L
- EI Instrument
Always a pleasure to do business with EI. Products ship rapidly. I have been using your products for 20+ years.
. . . the kit looks very well built and the company I fly for . . . has had a very good experience with your products and your customer support.
Love the look and having every piece of info in front of me… Better price and look [versus competition].
Love my new engine monitoring system.
- Customer
Tyler P. from Alberta, Canada
- Aircraft
Cessna 185F
- EI Instrument
Electronics International is an exceptional company with exceptional products… Oregon company, great products and great people.
The FP-5l I had installed is easy to use and so accurate it’s almost scary. When I find a company that produces a product that good I stick with them. The fact that these instruments also look so darn good didn’t hurt either.
After a full IFR install on my Cessna 175, my two favorite instruments without question is the CGR-30 Combo set. Simple and customizable, the data is invaluable!
I like being able to get a hold of a technical expert immediately when calling into the main EI phone number… The build quality of the sensors, display unit and EDC seem very good… I appreciate the business practices of EI and have had an EI R-1 Tachometer which has worked flawlessly for the past 20 years.
- Customer
Eric B. From Texas
- Aircraft
Grumman American AA-5B Tiger
- EI Instrument
Incredible customer service.