DIY Bluetooth Audio Receiver board Bluetooth 4.0 4.1 4.2 5.0 MP3 Lossless Decoder Board Wireless Stereo Music Module 3.7-5V

● Power Supply Voltage: DC 3.7-5V 

● Power Supply Interface: MICRO USB port or 2.54mil pin header 

● Dimensions (L x W x H): 3.3x3.5x1.1cm 

● Bluetooth Name: BM3 

● Bluetooth Password for this batch: 1688 (password required for connection, cannot be modified) 

● Communication Range: 3-12 meters (varies depending on environmental obstacles) 

● Supported Bluetooth Version: Bluetooth 4.1 or below 

● Supported Mobile Systems: Android, iOS 

● Channels: Dual-channel 

● Audio Quality: MP3 lossless decoding 

● Built-in Amplifier: None 

● External Amplifier: No restrictions on external amplifier size 

● PCB Thickness: 1.6mm 

● Pin Spacing: 2.54mil 

Features:

1. Equipped with a Bluetooth connection password to prevent accidental connections by others. 

2. Ultra-compact size, easy to embed and modify products. 

3. Dual-channel stereo output, compatible with most amplifiers, home audio systems, car audio systems, etc. 

4. Standard MICRO MINI USB 5P interface, can be powered using a phone data cable (same as Android phone charging port). 

5. Specific DIY embedded modification pins for soldering onto your circuit board. 

6. High-fidelity output circuit with RC isolation, no noise, excellent sound quality. 

7. Wireless operation without USB drives, memory cards, or button settings; purely controlled via mobile phone for MP3 playback. 

8. Includes 1 status pin for professional use, such as integrating with microcontrollers and relay switches to create a music lamp. 

Application Scenarios:

1. Car audio system modification, home audio system modification. 

2. Personal DIY Bluetooth speakers, electronic project creation. 

3. Square dance speakers, outdoor speaker modification.