note! !DC power supply for this decoder board: 5-12V. Without Bluetooth, without radio, without power amplifier, you can not connect the speaker directly, you need to connect the speaker after the power amplifier!
The power supply of this paragraph is divided into 5V and 12V.(Please choose one of the two)
1. Red 2p interface wiring when 12V power supply.
2. White 5P interface wiring when 5V power supply.
Special Note:
1. This model has two power supply modes: 5V and 12V(You can only choose one of the two, not at the same time), We ship the default 12V. If you need a 3.7V lithium battery for power supply, please note "5V" when you take the order!(The 5V version can only use 3.7V-5V power supply and the maximum cannot exceed 5.5V).
2. When using 3.7V lithium battery for power supply, do not use the anti-reverse protection line! Otherwise, it may not read the U disk or restart repeatedly! It is strictly forbidden to use AC as power supply for this decoder board! (The transformer must pass through the rectifier bridge and filter the wave before it can be used)!
3. The decoder board of this paragraph is 5-12V without power amplifier, and cannot be directly connected to speakers. Need to connect the amplifier after the speaker!
4. Power-off memory function: only the currently playing song can be recorded, but the current playing second cannot be memorized. If you have special requirements for power-off memory, please purchase carefully!