AITIAO 10Pcs Mini MP3 Player Audio Module MP3 Voice Decode Board DFPlayer with TF Card Slot

Features:
1. Supporting sampling rates (KHz): 8 / 11.025 / 12/16 / 22.05 / 24/32 / 44.1 / 48
2. 24-bit DAC output, dynamic range support: 90dB, SNR support: 85dB
3. Various control methods: I/O control mode, serial mode, AD button control mode
4. The broadcast language spots feature, you can pause the background music being played. Advertising finished playing back background sound to continue playing
5. The audio data is sorted by folder, supports up to 100 folders, folders can assign every 255 Tracks
6. 30 level adjustable volume, adjustable EQ 6
7. Fully supports FAT16 , FAT32 file system, maximum support 32G of the TF card, support 32G of U disk, 64M bytes NORFLASH

Interface Description:
1. VCC: DC 3.2~5.0V (Suggested 5V, don't over 5.2V); GND: Ground
2. RX: UART serial input; TX: UART serial output
3. DAC_R: Right Channel; DAC_L: Left Channel---(Drive earphone and amplifier)
4. SPK_1: Speaker+; SPK_2: Speaker- (Drive speaker less than 3W)
5. IO_1: Trigger port 1---Short press to play previous(long press to decrease volume)
6. IO_2: Trigger port 2---Short press to play next(long press to increase volume)
7. ADKEY_1: AD Port 1 (Trigger play first segment); ADKEY_2: AD Port 2 (Trigger play fifth segment)
8. BUSY: Playing Status (Low means playing/ High means no)

Application:
1. Car navigation voice broadcast
2. Road transport inspectors, toll voice prompts
3. Train station, bus station voice prompts security check
4. Fire alarm voice prompts
5. The vehicle into or out of the channel to verify the voice prompts
6. Border control channel voice prompts
7. Multi-channel voice alarm or voice guidance equipment operation
8. Electric sightseeing bu