I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
- Customer
Anthony H. from Oregon
- Aircraft
Piper PA-18 Super Cub
- EI Instrument
8am–4:30pm PST M–F
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Electronics International’s A-1 instrument provides pilots with the precision and stability needed in order to accurately monitor Outside Air Temperature or Carburetor Temperature while in-flight.
Not only will Electronics International’s A-1 display Outside Air Temp with a stable, one-degree (Fahrenheit) resolution, it also comes complete with an “Ice Zone” light that alerts the pilot when the Outside Air Temperature could possibly contribute to ice forming in the aircraft carburetor.
A 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 a 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.



A-1 Carb or OAT Instrument
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$428

Dimensions
2.5″ x 2.5″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
7 oz. (Unit), 1.6 oz for a probe & 2 oz for a 6′ Cable
Power Requirements
7.5 to 30 Volts, 1/10 Amp
Ice Zone Warning
Light is lit when displayed temperature is between 10°F and 39°F.
Display
Viewable in direct sunlight, with dimmable 12 and 24-volt backlight control lines.
Intensity Control
Separate intensity control lines allow you to independently control Ice Warning Zone and Backlight intensity.
Probes
Type K Thermocouple, Ungrounded

I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
Really glad to have accurate oil psi and temp! [It’s a] match with previous [EI] installs.
Good equipment at a good price. I have used your products before and have had great success.
Very easy to install. Harness is clearly marked. Instrument worked first time. The instrument is intuitive and easy to use.
Compact, precise, awesome!
Great to have all 6 egt’s, installation was straightforward. [I chose E.I. because of] price and availability.
Excellent tech help…
Good support when we called with particular questions with the initial setup. We liked the functions and the price.
Works Great! Getting used to menu the more I fly — Nice addition to airplane.
The quality and design appear to be excellent.
Currently have multiple EI Instruments in our aircraft. Quality and reliability are key.
EI’s team is great; you guys are the best.