The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
- Customer
Daniel N. From California
- Aircraft
Cessna 175 Skylark
- EI Instrument
MVP-50P, CGR-30, UBG-16, EAC-1, EC-1, EC-1P, EC-2, E-1, E-2, E-4, E-6, and EE-1P
8am–4:30pm PST M–F
[mbhi location="Main"]


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.
P-110 EGT Probe
P-110-F
$128

Common Uses
EGT Readings
Type
Hose Clamp, .130″ Hole
Operating Temp Range
-80°F to 1,700°F
Sensor
Type K Thermocouple
FAA Certifications
TSO’d, PMA’d
Configuration
Ungrounded
Material
316 SS
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Met all my requirements; great support.
Straight up install no issues. Works as advertised!
Looks Great, and intuitive to use. Packs a lot of information in a tight area, yet, I don’t need my glasses to read it!
Works great!
I really appreciate the quality of communication about my order. The instrument offers the right functionality (being a primary instrument) in the right form factor for my application.
[EI’s FP-5L with Aux Carb Temp Option] gave me fuel flow & Carby temp & was easy to retrofit.
While the installation is not quite done yet, I have seen the unit in my aircraft with the engine running and the monitor producing numbers. It looks very good and I cannot wait to go flying with it!
Really impressed thus far . . . . a rock solid replacement for old mechanical gauges.
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.
MVP-50 is a really great product
I have been flying with EI instruments for over 20 years. I purchased the CGR-30P to update my engine instruments into one modern package.