“20-Channel MP3 Player board” is a member of multi-channel playback board ,supporting a total of 20-port trigger . This product supports a high- priority audio input , it can automatically stop current playback of module and switch to this priority channel audio to output .
“20-Channel MP3 Player board” can be applied to a variety of places need voice prompts ,such as shopping malls , grocery stores, security and other public community places , providing intelligent voice prompts and alarm services . The high priority audio can be used for audio spots and other occasions .
Our company is a professional manufacturer, dedicated to the development and production of audio board, we have the superior strength of R & D team and a solid foundation of audio board developement , to ensure that the issue of product stability , superiority and professional . Constantly updated technical support and excellent after-sales service is one of the main factors that have us standed in the audio board market all the time. Our company keep on providing high quality and reliable after - sale tracking service and technical support for customers , to make sure our customers to use our products more leisurely and handy .
In order to make better use of our products , please be sure to read the instructions before use .
Features
☆ Power supply：Input power DC/AC 9V -24V；
☆ 20-channel trigger port ，divided into four groups (A，B，C，D group)，each group trigger through negative (0V)
☆ Can plug in up to 32GB SD card ；
☆ Support for a high- priority audio input；
☆ Support for 18W / channel HIFI audio output
☆ Support LINE OUT，can be used for connecting with external amplifie；
☆ RS232 control mode（control module to play/stop specified MP3 files）；
☆ TTL control（control module to play/stop specified MP3 files）；
☆ MP3 audio sample rate : 32Kbps - 320Kbps；