Ø Support 8-320Kbps MP3 audio format, beautiful voice.
Ø Voice easily changed, can copy audio files tointernal storage through U disk.
Ø Can download MP3 files less than 4Mthrough U disk.
Ø With lock function, avoiding wrong triggering orunwanted operation.
Ø Stable performance, can have external active speaker (external amplifier).
Ø With external trigger function(valid for low pulse)
Ø With a group of relay switch, close when triggering to play voice, delayed turn-off time default value is 30S.