11
7.- OPERATION
To use the ports, plug an USB device (A) or SD/MMC card (B) into the transmitter or connect a portable audio
player using a cable with 3.5mm plug (C).
The FM signal reception depends on the area and this can vary.
- Please, try to tune a non-signal radio frequency to avoid interferences.
- If you hear noise or distortion, we recommend to change the radio frequency. Test until you hear a clear
sound.
- When you use an audio device through the 2.5mm connector, you cannot use the Forward / Backward and
Play / Pause buttons to control it.
Set the volume level
using the
+/-
keys of the
controls or also you can
use
(down) /
(up)
keys in the MP4-300.
A
B
C
OFF
ON
- Listening to music