I took my Dynon EMS D-120 out of the airplane and the box sat on a shelf for two weeks or so, and all the programable settings and the hobbs time stayed.
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Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 625
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Jan 2020