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
8am–4:30pm PST M–F
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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.

| Model |
P-102-18 |
P-102-14 |
P-102-12 |
P-102-3/8 |
| Type | Gasket | Gasket | Gasket | Piggy Back |
| Used With | 18 mm Sparkplug | 14 mm Sparkplug | 12 mm Sparkplug | Primary CHT Probe (or Tanis Heater) |
| Max Operating Temp | 700°F | 700°F | 700°F | 700°F |
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P-102-14 CHT Probe
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$128



Type
Gasket
Used With
14 mm Sparkplug
Operating Temp Range
-80°F to 700°F Max.
Certifications
FAA, TSO’d, PMA’d
Configuration
Type K, Ungrounded
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Easy installation, lightweight solution. It looks good and is easy to use. [I chose E.I. because] I needed to replace my old Hobbs meter. This provided more functionality, allowing me to remove my old digital timer, and EI programmed it to my current airframe time.
Works great!
Awesome product. Fast easy installation.
Nice experience working with [sales]… to configure my gauges.” Reason I chose EI? “Past experience with EI.
E.I. Always Exceeds Expectations!
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.
I like being able to get a hold of a technical expert immediately when calling into the main EI phone number… The build quality of the sensors, display unit and EDC seem very good… I appreciate the business practices of EI and have had an EI R-1 Tachometer which has worked flawlessly for the past 20 years.
Outstanding support. From the friendly demeanor of whoever answers the phone to all the way to [their sales representative]. Your CGR-30 series is superb.
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.
Fantastic customer support!
Really glad to have accurate oil psi and temp! [It’s a] match with previous [EI] installs.