Excellent customer service. Without a doubt the best aviation part I have purchased.
- Customer
Alan B. from Florida
- Aircraft
Reid and Sigrist R.S.1 Snargasher
- EI Instrument
8am–4:30pm PST M–F
Open Now
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

Excellent customer service. Without a doubt the best aviation part I have purchased.
Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
The installation was straightforward and quite easy. Reliability and accuracy far exceed the original [aircraft’s] oil pressure/temperature systems. Also, the price was about a third of the cost to replace the gauge cluster.
Staff appears to be very helpful when assistance is needed in verifying information. Heard good things about it [EI] from personal known aircraft owners.
Great tech support. Someone always answers and gives accurate concise information.
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.
Love the situational awareness that the CGR-30 Combo gives me. Easy to read and understand displayed information.
Beautiful graphic display, easy to use, perfect automatic dimming!
Great Product, that provides a lot of very helpful engine data in an easy to use and see display! We are already finding cylinder cooling issues that we would’ve never known about before, and probably explains why we’ve had to replace that specific cylinder in the past. EI customer service on questions on how we wanted to set ours up was very helpful and positive. The CGR-30 had quite a few positive reviews online from other users.
The older EI ultimate engine analyzer that came with my plane that I bought 7 years ago has always worked flawlessly.
MVP-50 is a really great product
The reviews online were very good. Customer service has been great.