EC-1 EGT and CHT Instrument
FAA Approved
- TSO’d & STC’d
Monitor Two Channels
- Provides one channel of EGT and one channel of CGT.
- Can be upgraded to a full analyzer by adding an E.I. Remote Switch kit.
Interpret Your Readings Faster
- The digital display allows for quick trend analysis.
Budget Friendly
- Same precision found in the most advanced analyzers on the market, but won’t break the bank.
Accurate, Dependable & Easy To Use
- LCD sunlight viewable and backlit for night operation.
- Electronics International consistently has been a leader in digital engine instrumentation since 1979.
Questions?
8am–4:30pm PST M–F
Sorry, We’re Closed
Product Overview
Engine Leaning Feature
Precision Leaning
- Unique stable display allows precise leaning to peak EGT or specific temperature below peak.
EGT Diagnostics
- Valuable tool in troubleshooting EGT or CHT by providing early detection of potential engine problems.

Reliable Probes
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-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.
The EC-1 kit includes one (1) P-110F Fast Response EGT Probe and one (1) P-100 CHT Probe.

Prices
Retail Prices
Included in package:
- EC-1 EGT & CHT Instrument
- P-110F Fast Response Probe
- P-100 CHT Probe
- 8′ Thermocouple Extension Cable x 2
- Overlap Connectors
- Wire Harness
- Installation/Operating Instructions
- STC/AML
EC-1 EGT & CHT Instrument Package
EC-1
$580
Lead Time: Usually ships within 2–3 business days.

Specifications
EC-1 Specifications
Dimensions
2.50″ x 2.50″ x 3.65″ Deep, 2 1/4″ Flush Mount
Weight
7 oz (EC-1 EGT & CHT Instrument Only)
Power Requirements
7.5 to 35 Volts, Typical: 0.1 amps @ 12 Volts
Display
Viewable in direct and indirect sunlight.
Backlight
Fully backlit and dimmable for night flights.
Certifications
FAA TSO’d, STC’d

Videos
Product Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
We’ve worked with EI for years and love the product and support always received. Quality & dependability.
- Customer
- Aircraft
- EI Instrument
Sales reps have been very friendly and helpful.
My mechanic said that your product was very good, and he was correct.
Some of the best customer service in the avionics network that I’ve had the pleasure of dealing with. [I chose EI because of the] features, simplicity, and the user-friendly platform.
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!
- Customer
- Aircraft
- EI Instrument
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.
- Customer
- Aircraft
- EI Instrument
Works Great!
- Customer
- Aircraft
- EI Instrument
I have worked with your products before and I like them.
- Customer
- Aircraft
- EI Instrument
The [unit] is easy to read and quick to respond. I have multiple EI units and have had good experiences with all.
- Customer
- Aircraft
- EI Instrument
Great company to deal with. Excellent customer service. [I chose this E.I. instrument because it’s] simple and easy to use.
- Customer
- Aircraft
- EI Instrument
Looks great. Works great.
- Customer
- Aircraft
- EI Instrument