4 Buttons MP3 player with Buttons, Speaker and Battery Box

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Skill Level : Kit - No Soldering Required

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57.45 57.45 USD 57.45


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We now offer two different types of buttons.  
Please note the Gummy buttons have 12" of wire and the Tactile buttons have 6" of wire attached.

This kit includes:

  • The MP3 player board with built-in 10 Watt amplifier
  • an 8-watt speaker with 4 ft of wire connected.
  • battery clip to connect the included 8 x AA battery holder to the board.
  • 4 x buttons (choose when ordering: gummy buttons with 12" wires OR Tactile Button with 6" wires)
  •  gummy buttons 12" wires 

  • OR Tactile Button with 6" wires

All that is needed is a small screwdriver to attach the wires to the MP3 board. Add 8 x AA batteries and you are good to go!

You will also need a Micro USB Cable (not included) to load the sounds to your MP3 board. Alternatively, you can play them directly from a microSD card (not included) inserted into the board. If your computer doesn't have a MicroSD card reader/writer then this inexpensive microSD USB Reader and Writer will do.

Features of The FN-BC04-TB

  • A 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 a MicroSD 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 (8 ohms) speaker directly. Or  5 watt (if using the 4-ohm speaker) 
  • Equipped with a 3.5mm audio jack for stereo output that can drive an earphone directly or connect with an external amplifier.
  • Adjustable sound volume with the onboard potentiometer.
  • Wide range for power input (DC 8-24V).
  • PCB size: 52mmx49mm

Technical Parameters 

  • Working voltage: DC 8V-24V
  • Working current: ≤400mA (Input: DC12V DC)
  • Working current if playback through headphone jack only: 30mA (Input 12V DC)
  • Standby current: 10mA (Input 12V DC)
  • Power Consumption: ≤10W
  • On-board flash memory size: 4MB
  • Audio format: MP3 and WAV


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.

Features of the included speaker

Designed to fit the bill for a wide range of outdoor audio applications, Visaton's 2012 FRS7 2-1/2" full-range driver features a water-resistant cone. 8-ohm impedance.


  • Useful for background music and constant voltage PA systems
  • 2.5", 8-ohm full-range speaker with a linear response from 200 Hz to 20 kHz
  • Paper cone with foam surround
  • Water-resistant design

Product Specifications:

  • Nominal Diameter: 2-1/2"
  • Power Handling (RMS): 8 Watts
  • Power Handling (max): 15 Watts
  • Impedance: 8 ohms
  • Frequency Response: 200 to 20,000 Hz
  • Sensitivity: 88 dB 1W/1m
  • Voice Coil Diameter: 0.5"

Mounting Information:

  • Overall Outside Diameter: 2.62"
  • Baffle Cutout Diameter: 2.4"
  • Depth: 1.18"
  • 4ft. of wire soldered to the speaker

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