Description: 

Built-in high-quality MP3 player with great sound quality. 
Built-in 4MB flash memory as the storage device. 
Update sound files easily on a computer through a USB connection. 
Able to play four one-on-one sound files. 
Able to play a sound for once when power is applied. 
Able to play a sound (multiple sounds) in a loop when power is applied under MP3 player mode. 
Able to play multiple sounds in order through the first key input port under MP3 player mode. 
Able to play multiple sounds at random through the second key input port under MP3 player mode. 
Can be hooked up to a push button/switch/relay. 
Equipped with a high-quality class D amplifier. 
Adjustable sound volume through the blue potentiometer on the internal sound module. 
Wide power input and stable performance.

Features:

• Working voltage: 6V to 30V DC
• Working current: ≤1000mA
• Standby current: ≤10mA
• Power consumption: ≤3W
• Flash memory size: 4MB
• Audio format: MP3 (≤192Kbps)
• Sound pressure level: ≤100dB