Enhance your audio projects with this advanced Bluetooth Decoder Board featuring Bluetooth 5.0 technology for a more stable signal and superior sound quality. Designed with high-quality electronic components and a durable PCB material, this decoder board ensures reliable performance and long-lasting use. It supports a wide working voltage range from 3.7V to 24V DC, making it compatible with various power sources including Micro-USB mobile chargers, 3.7-4.2V lithium batteries, and 3.7-24V DC power supplies. Key Features: · Bluetooth 5.0 Technology: Provides a stable wireless connection with improved sound quality and a transmission distance of approximately 15 meters (49.2 feet) in open space. · Wide Voltage Compatibility: Operates efficiently within a broad voltage range of 3.7V to 24V DC, suitable for various speaker power amplifier applications. · Dual Channel Stereo Output: Supports two-channel stereo audio for rich and immersive sound experience. · High Signal-to-Noise Ratio & Low Distortion: Features an exceptional signal-to-noise ratio of 290dB and distortion ≤ -70dB, delivering clear and distortion-free audio playback. · Convenient Control: Easily turn the decoder board on or off by short-circuiting the on/off contact for 2 seconds, offering simple and effective operation. · Comprehensive Protection: Equipped with power reverse connection protection and anti-reverse connection features to prevent damage and ensure safe use. · Automatic Reconnection & Rechargeable Battery Support: Supports automatic reconnection and is compatible with rechargeable lithium batteries for versatile power options. · 3.5mm Audio Interface: Allows easy connection to a wide range of audio devices and amplifiers via the standard 3.5mm audio jack. Specifications: · Item Type: Bluetooth Decoder Board · Material: PCB · Bluetooth Version: 5.0 · Working Voltage: 3.7~24V DC · Transmission Distance: Approx. 15m / 49.2ft (line of sight) · Signal-to-Noise Ratio: 290dB · Distortion: ≤ -70dB · Number of Channels: Dual channel (stereo) · Audio Interface: 3.5mm audio interface · Module Protection: Power reverse connection protection How to Use: Power on the device, and the blue indicator light will flash rapidly, entering Bluetooth mode. After the prompt tone, the board enters pairing mode and awaits connection. Search for "XY-WRBT" on your mobile device’s Bluetooth settings and connect. Once paired, the indicator light remains steady, and you can stream music wirelessly. The indicator light will flash slowly during playback. If disconnected, the board automatically returns to pairing mode for the next connection. This Bluetooth Decoder Board is an ideal solution for wide voltage and volume-adjustable speaker power amplifiers, delivering high-fidelity audio and stable wireless connectivity for your audio enhancement needs.