Motorola RMU2040 Quick Reference page 101

RM SERIES
External VOX hands free
To enable voice activated
(VOX) accessories,
1. Attach a VOX supported
accessory
2. Power up with VOX
accessory attached
3. Press the menu button to
adjust IVOX Mic
Sensitivity
VOX 3
3) Menu Button
2) On/Off
Volume Knob
1) Attach
VOX
accessory