Features:
Equipped with a high-quality audio decoder chip that is able to decode MP3 and WAV audio formats.
Built-in a 4MB flash memory by default, which is able to store a total of 4 minutes long MP3 files of 128Kbps.
Supports max. 32GB micro SD card.
Load audio files to the internal flash memory/SD card through the micro USB port based on PC like using a USB flash drive.
4 trigger inputs available and triggered by negative pulse/GND(low-level signal).
12 different functions and trigger modes for each input can be set individually through a configuration file.
Can be controlled by buttons, switches, or relays.
Built-in a 10Watts class D amplifier and a 5Watts speaker for great sound output.
Adjustable sound volume through the small blue potentiometer.
3.5mm Audio Jack. (When this audio jack is used, the built-in speaker is disconnected, and adjustable sound volume is disconnected as well)
Wide power input (DC9-24V) and stable performance.
Dimensions: 120 x 120 x 60mm
Electrical Parameters:
Working voltage: DC 9V-24V
Working current: ≤400mA (Input: DC12V)
Power Consumption: ≤5W
Flash memory size: 4MB
Audio format: MP3/WAV
Reference for Normal Use:

Reference for Automatic loop Playback when Powered Up

Documentation and Downloads