Features

• High-quality audio decoder which, supports MP3 and WAV audio formats.

• Sampling rates supported: 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 (KHz).

• 24 bit DAC output and supports dynamic range 90dB and SNR 85dB.

• Supports one-on-one 4 button trigger control mode and RS232 serial port control mode.

• In button control mode, it plays back 4 sounds one-on-one by negative triggering.

• Uses micro SD card and the built-in SPI flash memory as storage.

• Built-in 4MB SPI flash memory by default.

• Supports max. 32GB micro SD card.

• Possible to load audio files to the flash memory directly via the micro USB port. Connecting to a computer is similar to using a USB flash drive with a PC.

• A built-in mono 10-watt amplifier that can drive a 10-watt speaker directly.

• Equipped with a 3.5mm audio jack for stereo output that can drive an earphone directly or to connect with an external amplifier.

• Adjustable sound volume with the onboard potentionmeter.

• Wide range for power input (DC 8-24V).

• PCB size: 52mmx49mm

Technical Parameters 

• Working voltage: DC 8V-24V

• Working current: ≤400mA (Input: DC12V)

• Power Consumption: ≤10W

• Onboard flash memory size: 4MB

• Audio format: MP3 and WAV

Connections

K1, K2, K3, and K4 are Normally Open (N.O.) manual buttons. TX port and RX port are used to connect with an MCU, through which serial commands are sent to control the module.