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PTT (Push-to-Talk)
Button
SB1 – Monitor Button
SB2 – Channel Select
RM SERIES
Factory Settings Reset
On/Off
Volume Knob
To reset radio to
Factory default
settings, Power up
with SB1, SB2 &
PTT pressed at the
same time.
Please note that all
channels will revert to
default frequencies.
Applies to
RMU2040 / RMU2043 / RMM2050
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