Electronics International Eac-1 One Channel EGT/Oat/CHT

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Part# 10-00806
MFR Model# EAC-1


The line of Electronics International digital instruments offers precise readings at exceptional prices. All gauges are accurate to 1% and are FAA-approved under STC No.1626NM. Furnished complete with all probes and leads.

EAC-1: Single Channel EGT/OAT/CHT Kit with Ice Zone Warning Light, 2 1/4" Mount, 2.5" Depth, 16 Oz. Kit, STCd, TSOd, PMAd, 1 Degree Resolution, Accurate within 1/2%, Viewable in direct sunlight.

Package Includes: Instrument, 3 6 Cables, 1 EGT Probe, 1 OAT Probe, 1 CHT Probe.

E.I. products include all documentation and certifications

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -

FAA Approval

  • STC'd, TSO'd, PMA'd
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This device looks high quality and is fairly priced. It even comes with installation instructions and helpful setup instructions!

Jeff K Verified Purchase


September 11, 2022

Does this fit into a Mooney M20J 201. to replace the original EGT OAT indicator? Can you use the built in OAT probe or a change mandatory.

Thomas W
July 11, 2021

Strongly recommended. I had ordered with the wrong probe in-box. Dumb me. EI’s customer service folks fixed that for me with a quick exchange! Awesome customer experience! Product has performed flawlessly for its first year in the panel!

Don W
August 25, 2018

Unit is for CHT and EGT one channel, and also one channel for OAT or Carb temp, but not both. Comes with an OAT probe and a CARB probe, only one can be used . You decide if you wan outside air temp or carb temp.

Brian A
April 13, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is the Ice light a function of the of the EI EAC-1 one channel EGT/OAT/CHT for Carb ice?

Yes, when Carb Temp is selected, the carburetor temperature is continuously monitored and the “Ice Zone” warning light over the display is activated for that channel.

Q: Is the EI EAC-1 EGT/OAT/CHT approved as a primary EGT and CHT instrument?

Yes, it is FAA TSO'd, STC'd, and PMA'd as primary.

Q: Do the probes come with the instrument gage?

Yes, comes with one p-110 egt probe, one p-100 bayonet style cht probe, one p-128 oat probe and three six foot cables.

Q: I need to replace the egt probe, what is the part number to order?

You would use part number 10-01591.

Q: Is the temperature in F*or C*?

It is in fahrenheit.

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