Input voltage range: 4.5V~12.0V DC, or adjustable 3.3V (jumper selectable). Current consumption: Approximately 45mA idle, 85mA playback Media: SDSC and SDHC microSD cards. File system: FAT32 and FAT16. Audio output: Headphone stereo (1/8" stereo jack) Trigger input: Logic level 3.3V~5.0V, active low input, with internal pull-up (connector provides separate ground, switch or jumper to each trigger input) Directly connectable) Serial: Full duplex, 8-bit, 38.4Kbaud (default, other baud rates supported via initialization file).
