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, E-1, E-1P, E-2, E-4, E-6, EAC-1, EC-1, EC-1P, EC-2, TC-1P, C-1, C-2, C-4, C-6
8am–4:30pm PST M–F
[mbhi location="Main"]

P-104: Universal Temp Probe
-
$128
Type
Screw Down, #6 Hole Size
Certifications
FAA, TSO’d, PMA’d
Max Operating Temp
700°F
Configuration
Type K, Ungrounded
The OPT-1 is more readable than the factory Cessna oil pressure/temp gauges.
Good equipment at a good price. I have used your products before and have had great success.
Just about to begin flying with the EI MVP-50P, so no in-flight feedback yet. But I did study the user manual, then sat in my plane going through the screens, menus, etc. It was very easy and intuitive to locate everything, so I’m confident that it will become second nature to do this in flight… Very happy with all interactions with EI.
Much better quality with the bezel and buttons and knobs [vs. competition]. Also much easier to navigate and add fuel.
Electronics International is an exceptional company with exceptional products… Oregon company, great products and great people.
I have several EI units in my aircraft and have been very pleased with their reliability over the years. The other great part, besides the unit themselves, is the support from you all. Thank you for your support over the years… I chose IE for your reputation for quality and pricing. I have been very pleased with my units. My graphic engine analyzer, fuel flow meter, volt/amp meter, RPM and now Manifold gauge.
Great customer service!
After enquiring through (one of) your dealers and calling EI directly it was clear that you provided good customer service and would likely not drop the ball on tech support, and so far I have been right.
Your products always work great! Great customer service and a quality product that we have used for years.
Excellent customer service. Without a doubt the best aviation part I have purchased.
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.
Love the look and having every piece of info in front of me… Better price and look [versus competition].