8， 供應MP3式消防廣播音源GB9215（前置放大器）
1,MP3播放器
2,USB接口可配接U盤、讀卡器播放音樂
3,具有曲目顯示屏
4,自供穩壓電源

5,尺寸2U                              

MP3 Player
1,MP3 player .
2, USB interface can be equipped with U disk, card reader to play music.
3, Repertoire display screen.
4,Self-regulated power supply