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
Sorry, We’re Closed


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.
This is a high quality instrument and works perfectly. Well designed, well constructed and well documented. I couldn’t be more pleased!
[I chose EI because they offer a] certified replacement vs. back-up only and they look great.
Great service. [I replaced/upgraded] unit in aircraft.
Every person was willing to help me when I needed and the whole purchasing process was smooth. [And, E.I.] was recommended by my mechanic.
Great product at a great price …. (and) reliability.
The R-1-6 is a great instrument. [I chose EI because of] quality.
EI representatives… have been very helpful, truthful, and knowledgeable… We had no idea, that a few weeks later [after our purchase], we would need to have a Top Overhaul. What great timing! Having your engine monitor installed in our plane will hopefully help us keep it out of the shop for further engine repairs.
Your company shares a good reputation!
Always very friendly and knowledgeable staff. Over time, I have purchased six different EI instruments for the two planes I own. The instruments are easy to install, very accurate, and dependable. EI has very stable and easy-to-operate instruments.
Works great!
Very impressed with the clarity and readability of the CGR-30P gauge.