The iBox is the heart of the iEFIS system, and the conductor in the symphony of communication between all system devices and the iEFIS screens. The iBox contains the GPS engine (with antenna connection), the pitot/static sensors and Angle of Attack sensors. The iBox is the hub of communication for all the system devices (AHRS, RDAC, Autopilot Servos) and is also the hub of communication with all third party devices (radios, transponders, ADS-B, VP-X) via its RS-232 and ARINC interfaces.

One iBox is necessary in every iEFIS system, and in cases where maximum redundancy is required, a 2nd iBox can be added to the system. The 2nd iBox acts as a ‘hot standby’ and is ready to take over all iBox tasks automatically when necessary, or on command by the pilot.

Click on the DB-25 connectors above to see more information on those connectors.

The Power Connector (pigtail harness included with every iBox):
The iBox can be powered by 1 or 2 Power Sources (as in the case of a backup battery system). It also has a Keep Alive Power input that maintains date and time and some non-volatile memory items without using the CR2032 battery, which can result in up to 10 years of life on the CR2032 eliminating the need to change this battery every year. The Outside Air Temp sensor also connects to the Power connector.

The CAN Connector (pigtail harness included with every iBox):
The iBox features 2 CAN buses (CAN 1 and CAN 2). The system devices can be split up in any way on each of the CAN buses.

OAT Probe
Our aluminum OAT probe is included with every iBox

GPS Antenna
Our tuned GPS Antenna is included with every iBox (inside mount)

EFIS LAN coax
An RG-174 EFIS LAN coax cable is included with each system

Go to Legit Avionics Dear MGL Avionics and Michigan Avionics customers:

As you have seen here and elsewhere, MGL Avionics USA and Michigan Avionics have ceased operations.

Over the last 20+ years, we have been proud of the community that has been built around these products and are grateful for the amazing aviators that we have had the pleasure of meeting and serving both in the US and abroad.

As a token of our gratitude towards the community, our US-produced knowledge base, containing support articles covering items like pressure and temperature sensor installation, upgrade instructions, and more, will continue to be available and free for all to use. This is available at https://support.michiganavionics.com/

Effective 11/5/2025, we are no longer accepting any orders on our website.

For all sales and support inquiries, including repairs, please contact:

Legit Avionics, MGL Avionics US Distributor
Evan Flatt
765-595-1163
info@legitavionics.com
www.legitavionics.com

Thank you, again, to everyone who has helped make the US MGL Avionics community what it is and we wish all the best for the future.

Matt Liknaitzky, MGL Avionics USA

Adam O’Connor, Michigan Avionics

Thank you.

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Category: AHRS

Additional information

SP-6

Power Specs	Operating Voltage: 11-14V DC Current Draw: 50 mA (heater off, normal operating after warm-up), 120 mA (heater on, initial powerup and warm-up)
Physical Specs	Weight: 126 grams (unit only) Unit Size: 3.5in x 3.5in
Environmental Specs	Maximum G-Load: 30G Temperature: 35 Celcius (Internally Regulated)
Brand	MGL Avionics

SP-7

Power Specs	Operating Voltage: 11-14V DC Current Draw: 50 mA (heater off, normal operating after warm-up), 120 mA (heater on, initial powerup and warm-up)
Physical Specs	Weight: 126 grams (unit only) Unit Size: 3.5in x 3.5in
Environmental Specs	Maximum G-Load: 30G Temperature: 35 Celcius (Internally Regulated)
Brand	MGL Avionics

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