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 Loss Decoding, Stereo 2 Channel Output
Operating voltage: 5V / 3.7V - 4.2V
Sensitivity: -87dBM
Processor:
This product MH-M38 is a low-power Bluetooth design solution that supports transmitting the latest Bluetooth 4.2, lossless playback of 2-channel stereo, and Bluetooth connection after the module is connected to Bluetooth. In open environment, the Bluetooth connection distance is up to 20 meters.
A variety of Bluetooth audio receptions, widely used in a variety of audio DIY.
PIN Number PIN Header Description
1 5V Power Supply Positive 5V
2.g Negative Power Supply
3. V Lithium battery positive 3.7-4.2V
4.L+ / L-left channel output (direct speaker)
5. R+ / R-right channel output (direct speaker)
Function Description:
Bluetooth V4.2 version, Bluetooth automatic connection technology, support WAV / WMA / FLAC / APE / MP3 decoder, stereo dual channel output
When you turn on the module, the phone will search the Bluetooth name MH-M18 / MH-M28 / MH-M38, connect the Bluetooth and then play music.
Note:
1. Power Supply: Can be used directly, Android cable for Micro USB DC power supply, or 5V power or 3.7V lithium battery can be connected (as shown in the picture below). Please note that 5V and 3.7V power interface are different. 5V is connected to 5V GND, and 3.7V lithium battery connected v and GND.
Maximum working current Is5V 2A We recommend using 5V 2A regulation power supply to improve sound quality.
2. Support USB sound card, free drive (plug and play) Connect the module to your computer with the USB cable, the computer can play music through the output of the module amplifier.
3. Audio output: output left and right channel stereo audio signal can be connected to 2-8 euro, 3-5W speaker. Press 4 O 5W speaker.
4. This product has its own dual 5W power amplifier circuit, which must not connect to another amplifier. The power amplifier chip is damaged because the output of the two amplifier can be connected in parallel or the negative poles are connected to each other.
Package included:
1 x M38 Module
If you have any questions, please contact us.