. . . looks really good! Friends have these installed and give very good reviews.
- Customer
David W. from Arizona
- Aircraft
Cessna 150
- EI Instrument
8am–4:30pm PST M–F
[mbhi location="Main"]
This feature requires an optional Remote Switch (RS-4-1S, add $349) see in Product Catalog and Price List.

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-1 connector. The OLC-1 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.
The E-1 kit includes one (1) P-110F Fast Response EGT Probe.

E-1 Package
E-1
$428
Lead Time: Usually ships within 2–3 business days.

Dimensions
2.50″ x 2.50″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
7 oz (E-1 Single EGT Instrument Only)
Power Requirements
7.5 to 35 Volts, Typical: 0.1 amps @ 12 Volts
Display
Viewable in direct and indirect sunlight.
Backlight
Fully backlit and dimmable for night flights.
Certifications
FAA TSO’d, STC’d

. . . looks really good! Friends have these installed and give very good reviews.
Very easy to install and directions were straight-forward.
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Great… price [&] support
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
E.I. Always Exceeds Expectations!
Excellent customer service. Without a doubt the best aviation part I have purchased.
I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
The display is large and clear. The functions are simple and easy to use. Great purchase decision.
Nice bright display.
The R-1-6 is a great instrument. [I chose EI because of] quality.
Excellent tech help…