Bluetooth Audio Receiver Module for DIY Speaker Sound System Conversion(M18)

Specifications: - Item Type: M18, M28, M38 - Bluetooth Version: V4.2 - Support for Bluetooth Protocol: HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2 - Format Support: WAV/WMA/FLAC/APE/MP3 (un-decoded), stereo two-channel output - Operating Voltage: 5V/3.7V-4.2V - Not Connected Broadcast State: 5.5MA - Connection Work State: 20MA - Deep Sleeping: 3UA - Transmission Distance: 20 meters (empty or low interference environment) - Operating Temperature: -40°C to +85°C - Sensitivity: -87dbm - Widely used in various Bluetooth audio receivers, DIY conversion of various sounds, etc.

Package List: - Package List 1: 1 x Module - Package List 2: 1 x Module - Package List 3: 1 x Module, 2 x Female Connector, 2 x Male Connector

For Bluetooth V4.2 version, MH-M18 / MH-M28 / MH-M38 supports WAV/WMA/FLAC/APE/MP3 lossless decoding and stereo two-channel output. After powering on the module, the phone can search for the Bluetooth name MH-M18 / MH-M28 / MH-M38 and play music when connected to Bluetooth.

M18 Features: - MUTE mute control terminal: used to control the power amplifier board. When muting, MUTE outputs a high level of 3.3V and outputs a low level during playback. - Volume power off function: The default output is 100% volume. Press the button to control the volume increase, and decrease. If the control volume is less than 15%, the volume output will be 15% after power-on; if the control volume is greater than 15%, the original volume will remain unchanged after power-on.

M28 Features: - Power supply: It can be directly powered by the MICRO USB for Android cable 5V, or it can be connected to a 5V power supply or a 3.7V lithium battery. - Audio output: The earphone can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board.

M38 Features: - Power supply: It can be directly powered by the MICRO USB for Android cable 5V, or it can be connected to a 5V power supply or a 3.7V lithium battery. The maximum working current is 5V2A, and it is recommended to use a 5V2A regulated power supply for better sound quality. - Support USB sound card, free drive (plug and play): Connect the module to the computer with the USB cable, and the computer can play music through the module amplifier output.

product information: