Home / ei Products / Piston Engine Aircraft / EC-1 EGT and CHT Instrument
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
Open Now
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
Great tech support. Someone always answers and gives accurate concise information.
- Customer
- Aircraft
- EI Instrument
Electronics International is an exceptional company with exceptional products… Oregon company, great products and great people.
I won a FP-[5]L and had it installed in my c150. I was/am impressed with the accuracy and ease of operation of the FP. I wanted a new tach and I trust (and verified) that the EI R-1… would be my best choice. I am not a rich man. These instruments are affordable and incredibly accurate. Already planning my next buy from EI.
- Customer
- Aircraft
- EI Instrument
[Customer Support was] very responsive and helpful. [I heard about EI through] advice from others. Just about everyone I asked about the CGR-30 loves it and your company.
- Customer
- Aircraft
- EI Instrument
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
- Customer
- Aircraft
- EI Instrument
The tach looks and operates amazing. Extremely accurate.
Haven’t used it yet, but we are excited to & Love the way it looks!!
- Customer
- Aircraft
- EI Instrument
Sales reps have been very friendly and helpful.
Great service. [I replaced/upgraded] unit in aircraft.
- Customer
- Aircraft
- EI Instrument
I love my new EGT. Very accurate and has ambient air temperature so I know how cold my engine is before I start it. Easy to see lighting.
- Customer
- Aircraft
- EI Instrument
[The EAC-1] looks great running… The wiring harness was very well fabricated. Installation was easy- fit perfectly in an existing hole in panel. The brightness of the display is excellent.