10pcs M28 Bluetooth 4.2 Audio Receiver Module With 3.5mm Audio Interface Lossless Car Speaker Headphone Amplifier Board Wireless Refit

User Manual: Click here to open For different needs of customers, we offer 3 versions for you to choose from: Function / Model M18 (Product ID: 1476791) M28 (this item) M38 (Product ID: 1486746) Micro power supply Audio headphone jack Built-in amplifier (5W+5W) Lithium battery powered Support USB sound card, free drive Volume memory/adjustment MUTE mute interface Button extension Bluetooth version bluetooch V4.2 Support Bluetooth protocol HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2 Format support Support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo two-channel output Operating Voltage 5V/3.7V-4.2V Broadcast status not connected 5.5MA Connection working status 20MA Deep sleeping 3UA Transmission distance 20 meters (empty or low interference environment) Operating temperature -40C to +85C Sensitivity -87dbm Introduction: This product MH-M28 is a low-power Bluetooth design solution, supporting the latest Bluetooth 4.2 transmission, two-channel stereo lossless playback, Bluetooth connection after the module is connected to Bluetooth, very convenient. In an open environment, the Bluetooth connection distance can be up to 20 meters. Widely used in a variety of Bluetooth audio reception, a variety of audio DIY modification. Pin number Pin header Description 1 5V Power positive 5V 2 GND Negative power supply 3 VBAT Lithium battery positive 3.7-4.2V 4 L Left channel output 5 R Right channel output 6 AGND Audio ground Function Description: Bluetooth V4.2 version, supports Bluetooth automatic connection technology, supports WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual channel output. After the module is powered on, the mobile phone searches for the Bluetooth name MH-M18/MH-M28/MH-M38, and can play music after connecting Bluetooth. Package includes: 10 x M28 Module