Fr4 pcb for Amplifier device module

Product features: Amplifier device module as an embedded serial port networking module, it is provided to users for system networking. The module provides up to three standard TTL level serial ports. When the user equipment is connected to the network, the extended audio function can provide more value-added applications, such as: on-site help, center broadcast notification, etc.

The computer in the service center can manage the user's equipment through the network, and can also play background music, notifications, and on-site intercommunication according to requirements.

Scope of application: Suitable for canteen charging system, attendance access control system, hotel room control system, mine monitoring, computer room monitoring and many other application fields.

Main function 

The transparent transmission network of the serial port signal and the network signal transmits the audio signal, and can be intercom or broadcast, and supports multiple groups of simultaneous intercom in the same local area network, such as A and B, C and D, E and F etc.

Characteristics

· Power input +5V DC, 300mA;

· 10/100M Base Ethernet interface;

· Voice MIC input;

· Audio Line in line input;

· Stereo Line Out line output;

· 2W audio amplifier output, connected to 4 ~ 8 Ω speakers;

· Amplifier control input and output (electric level input and relay output, mute output, power off output);

· One-way control serial port (interacting with E702T through serial port command);

· Two-way expansion serial port, the speed is up to 3.125Mbps, which can be provided to the user equipment for network communication, and can also be connected to peripherals such as camera module;

· One way to extend the SPI interface, the rate is up to 12M;

· Provide NAManager common parameter configuration file;

· Provide a secondary development dynamic library dedicated to MP3 playback and intercom;

· Has a network remote firmware upgrade function;