3
1 Power switch / volume
○
Rotate the switch to turn the device on or off;
○
After turning the power on, turn the switch knob
to increase or decrease the volume of the
device.
2 MIC interface
External mic interface
3 Multi-function button
Menu functions for the screen;
4 LOCK Lock button
○
Light press this button to switch the current menu
page
；
○
Hold press the button for 2s to lock the button
operation.
5 Display screen
OLED
Display screen
6 Frequency knob
○
Rotate this knob to change the current
frequency value
；
○
Light press this knob to turn the current
function menu.
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