CGR-30C Primary Engine Monitor System

Part No: CGR-30C

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Options: CGR-30C Without EDC
Sizing guide

FAA Approved Primary Replacement

  • Primary Replacement STC’d, TSO’d & PMA’d
  • The CGR-30C allows for the removal of old engine instruments such as oil temperature/pressure, fuel pressure, and fuel level.
  • Monitors four or more fuel tanks in an easy-to-read, full-color digital format.

Easy To Install

  • The CGR-30C mounts flush into an existing 3 1/8″ hole.
  • Engine Data Converter (EDC) accepts all inputs. Only 2 wires run to the back of the instrument.

Accurate, Dependable & Easy To Use

  • Electronics International consistently has been a leader in digital engine instrumentation since 1979.

Data Recording of Every Flight

  • All monitored functions are stored up to three times per second.
  • Up to 1,500 most recent flights stored, downloaded via a USB port.
Questions & Answers

See below for answers to our most popular questions.

Have a Question?

  • Does the unit come with the necessary sensors for pressure, temperature etc?

    Yes, an order form has to be completed and submitted so the system is set up for the specific aircraft, including all probes and sensors.


3.25” x 3.25” x 4.45” Deep, 3 1/8” Flush Mount

1.1 Pounds (Instrument Only)

Power Requirements
7.5 to 30 Volts
Typical: 0.2 amps @ 12 Volts, 0.1 amps @ 24 Volts

Active Matrix, Sunlight Readable

Fully Dimmable for Night Flights

USB Port
Data Download and Software Updates

Internal Storage
Up to 1,500 most recent flights stored. All monitored functions are stored up to three times per second. Recorded flight data can be easily downloaded via USB port.


  • FAA STC’d as Primary Replacement
  • FAA TSO’d to DO-160G
  • FAA DO-178 Level C
  • Transport Canada Civil Aviation (TCCA) Validated STC
  • European Aviation Safety Agency (EASA) Validated STC

EI Spirit of Oshkosh Rebate

July 15, 2023 through August 15, 2023

EI Oshkosh Rebate 23

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Electronics International has launched a new rebate just in time for Oshkosh EAA Airventure! Save up to $2500 with the Spirit of Oshkosh mail-in rebate on select items purchased July 15 - August 15, 2023.

  • STC’d & TSO’d
  • 3 1/8 Mount
  • Flush Mounted
  • Sunlight readable color display
  • Four Available Screens
  • Up to 16 primary functions
  • 6 annunciators
  • Over Twenty Function Options

Product Reviews from Verified Customers