MH-M28 Wireless Bluetooth Audio Receiver Board

MH-M28 Wireless Bluetooth Audio Receiver Board is a compact audio module that allows wireless Bluetooth audio streaming to speakers or audio systems. Designed for integration into DIY audio projects, the module supports stereo output and onboard audio amplifiers, making it a ready-to-use solution for wireless speaker builds, retrofitting old audio devices, or creating portable music systems.

Key Features:

• Bluetooth 4.2: Stable wireless connection with low power consumption and fast pairing
• Stereo Audio Output: High-quality left and right channel output for clear sound
• Onboard 5W Amplifiers: Directly drive 4Ω speakers without external amp circuitry
• Plug & Play: Easy integration with minimal wiring for DIY and embedded use
• Power Supply Compatible: Operates on 3.7V–5V DC for battery or USB power

Technical Specifications:

• Bluetooth Version: 4.2
• Audio Output: Stereo L/R (Speaker terminals)
• Amplifier Output Power: 2x 5W @ 5V, 4Ω load
• Operating Voltage: 3.7V – 5V DC
• Standby Current: <20mA
• Working Distance: Up to 10 meters (open space)
• Audio Interface: 2-pin speaker output

Mechanical Specifications:

• PCB Material: FR4 Glass Epoxy
• Mounting Holes: 2mm holes for screw mounting
• Connectors: Solder pads and screw terminals

Dimensions:

• Board Size: 45mm x 20mm (L x W)
• Thickness: Approx. 1.6mm

Pinout and Wiring:

• VCC: Connect to 3.7V–5V DC power supply
• GND: Connect to ground
• L+ / L-: Left speaker output
• R+ / R-: Right speaker output

Datasheet Reference:

• Search online for “MH-M28 Bluetooth Audio Receiver Board datasheet PDF”

Applications:

• DIY Bluetooth Speakers: Create custom wireless stereo speaker systems
• Retrofit Old Speakers: Add Bluetooth capability to traditional wired speakers
• Battery-Powered Audio Projects: Use in portable speakers or embedded MP3 players
• Car Audio: Integrate wireless audio in vehicles with basic speaker systems

Equivalent Models:

• MH-M18: Similar board with Bluetooth 4.2 and audio amplifier
• JDY-62: Bluetooth stereo audio receiver module, compact version
• XY-BT-Mini: Small size audio Bluetooth module for embedded use
• ZS-040 with HC-05: Generic Bluetooth modules (requires additional amplifier)

Package Includes:

• 1 x MH-M28 Wireless Bluetooth Audio Receiver Module