Garmin G3X Pilot's Manual page 26

System Overview
• GMU 44/GMU 22
Magnetometer: Measures the local magnetic field and sends data to the AHRS
–
for processing to determine aircraft magnetic heading. This unit receives power
directly from the AHRS and communicates with it via an RS-485 digital interface.
• GTP 59
Temperature Probe: Provides raw air temperature data.
–
• GAP 26
– Pitot Probe: Sends dynamic air pressure for airspeed, altitude, and angle of attack
(AOA), when paired with a GSU 25.
4
GMU 44/GMU 22
GTP 59
GAP 26
Garmin G3X Pilot's Guide 190-01115-00 Rev. K