4.4 Accessory connector
Accessory connector is used to connect external speaker MIC, and headset, etc.
Please close the cover when it is used.
5. Radio operation
The definition of the various buttons of the XP-100D/400D series is the same as Figure 5-1).
Figure 4-4) Accessory connector
Figure 5-1) XP-100D/400D Series button definition