Very happy with our new tachometer!
P-100 – CHT Probe
FAA Approved Instrument
- FAA TSO’d, PMA’d
- Accurate and stable, precise pressure measurements.
- Can be used in a pressure environment.
- Robust construction, brass body.
- Perfected over decades of testing and field trials.
Compatible with:
MVP-50P, CGR-30, UBG-16, EAC-1, EC-1, EC-1P, EC-2, TC-1P, C-1, C-2, C-4, C-6, and CC-1P
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-100 CHT Probe
- Installation Instructions
Description
Package
Retail Price
P-100 CHT Probe
-
$128
Specifications
Specifications
Common Uses
CHT Readings
Type
Screw-in
Operating Range
-80°F to 700°F Max.
FAA Certifications
TSO’d, PMA’d
Configuration
Type K, Ungrounded
Material
Brass
Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.
Good product; company is eager & willing to help
The CGR-30P is working great and it’s an outstanding addition to our avionics package.
Your product didn’t feel cheaply made. Overall much better quality with the bezel and buttons and knobs. Also much easier to navigate and add fuel.
- Customer
Justin R. from Texas
- Aircraft
Cessna T207A Turbo Skywagon
- EI Instrument
Amazing aftermarket service. Good quality products
- Customer
YAJASI Y. from New Guinea
- Aircraft
Pilatus Porter PC-6
- EI Instrument
Awesome Tech Support. Like the functions it supports and the fit and look in the panel.
- Customer
Brian M. from California
- Aircraft
Mooney M20F Executive 21
- EI Instrument
Good to go! Excellent instructions and easy install. Outstanding instrument!
We chose your product because of the great support and reputation your company sustains.
Safety and simplicity!
- Customer
Andrew L. from Florida
- Aircraft
Piper PA-28-235 Cherokee Pathfinder
- EI Instrument
The display is large and clear. The functions are simple and easy to use. Great purchase decision.
The older EI ultimate engine analyzer that came with my plane that I bought 7 years ago has always worked flawlessly.