With MicroUSB power supply interface, it can be powered by mobile power supply or USB charger through the mobile phone data cable, and can also use 3.7V lithium battery and USB 5V power supply.
Support TF card (mobile phone storage card), U disk playback mode.
There is no need to weld the terminals with speakers, which is convenient for wiring.
Modular design is convenient for modification.
product description:
1) Support MP3 format, auto play when power on, the red LED indicator is updated when playing.
2) Support U disk (tested 32G), TF card (tested 16G) playback mode; power on default TF card mode, if there is no TF card automatically jump to U disk mode, and both devices are installed, you can manually Set the playback mode, please refer to the key operation instructions for details.
3) The buttons can adjust the up and down track switching, volume +-, pause/play, mode switching, please see the key operation instructions for details.
4) You can press the button to set the “single/full song” cycle, the default is the full song cycle at power-on, press the “Repeat” key to change the cycle mode
Key operation instructions
“Prev/V–” key: “Short press” is to switch “previous” song, “long press” is “decreasing volume”
“Next/v++” key: “Short press” is to switch “Next” song, “Long press” is “Volume increasing”
“P/P/Mode” key: “Short press” for “play/pause” switch, “long press” for U disk, TF card “mode” selection
“Repeat” key: “Short press”, for “single/full song” cycle switching (no long press function)
Note: 1. “Long press” time is about 2S
2. If you use the U disk mode, 5V power supply is recommended, and some U disks do not support 3.7V power supply.
Product specifications
Power supply range: 3.7~5.5V
Exquisite double-layer board design, large area copper plating, stable and reliable.
Anti-static bags are exquisitely packed to avoid static electricity damage during delivery.
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