Modul MP3 Bluetooth 4.1 HW-770B

Product Description:

The HW-770B V0.2.1 module is a Bluetooth audio decoding board, ideal for DIY projects that require high-quality stereo playback. It supports the Bluetooth 4.1 standard, features automatic reconnection, and is compatible with lossless audio formats such as WAV, APE, FLAC, and MP3. Equipped with a 3.5 mm audio jack for stereo output and powered via micro USB or dedicated external pads, this module is perfect for integration into portable speakers, audio systems, or custom amplifiers.

Main Features:

• Bluetooth 4.1 with auto-reconnect: Enables fast and stable connection to mobile devices, supporting A2DP, AVRCP, HFP, and other profiles.
• Lossless audio decoding: Compatible with high-fidelity audio formats – WAV, APE, FLAC, and MP3.
• Stereo output via 3.5 mm jack: Can be connected directly to headphones, speakers, or amplifiers.
• Dual power compatibility: Can be powered via 5V micro USB or directly from a 3.7V–5V Li-ion battery.
• LED indicator: Displays Bluetooth connection status (solid blue – connected, flashing – pairing mode).

Technical Specifications:

• Bluetooth Version: 4.1
• Supported Formats: WAV, APE, FLAC, MP3
• Power Supply Voltage: 3.7V – 5V (via USB or dedicated pad)
• SNR (Signal-to-Noise Ratio): 90dB
• THD+N (Total Harmonic Distortion + Noise): -70dB
• Crosstalk: -86dB
• DNR (Dynamic Range): 91dB
• Supported Bluetooth Profiles: A2DP, AVCTP, AVDTP, AVRCP, HFP
• Operating Distance: up to 15 meters

Usage Instructions:

1. Power the module via USB cable or the BAT pad (3.7V–5V).
2. The blue LED will start flashing – the module has entered pairing mode.
3. Search for the device named "-8T" on your phone and connect.
4. Once connected, the LED will remain on and you can start playing music.

Package Contents:

• 1x Bluetooth decoding board module HW-770B V0.2.1