MH M18 MH M28 MH M38 VHM 314 Bluetooth 4.1 5.0 Audio Receiver Board MP3 Wireless Bluetooth Audio Module 4.2 Stereo

Product Overview

Description

MH-M18 MH-M28 MH-M38 VHM-314 Bluetooth 4.1 5.0 Audio Receiver Board MP3 Wireless Bluetooth Audio Module 4.2 Stereo Product parameters: 

Power supply: 3.7-5V
Signal-to-noise ratio: 90DB
Total Harmonic Distortion + Noise: - 70DB
Crosstalk: - 86DB
Support profiles: A2DP/AVCTP/AVDTP/AVRCP/HFP
Transmission distance: 15M (open without partition)
Decoding format: WAV+APE+FLAC+ MP3 lossless decoding, stereo output
Size: 30mm*30mm
 

Product parameters:

Power supply: 3.7-5V
Signal-to-noise ratio: 90DB
Total Harmonic Distortion + Noise: - 70DB
Crosstalk: - 86DB
Support profiles: A2DP/AVCTP/AVDTP/AVRCP/HFP
Transmission distance: 15M (open without partition)
Decoding format: WAV+APE+FLAC+ MP3 lossless decoding, stereo output
Size: 30mm*30mm


Product introduction:

   This product MH-M18 is a low-power bluetooth design, supports new bluetooth 4.2 transmission, two-channel stereo lossless playback, after the module is connected to bluetooth, it can quickly realize bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters.

The module interface adopts a half-hole process, and customers can directly patch or solder it on the board.
Widely used in various Bluetooth audio reception, various audio DIY modification, etc.

Function Description:

Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo binaural output.
After the module is powered on, the mobile phone searches for the Bluetooth name MH-M18, and the music can be played after connecting to the Bluetooth;

Module blue indicator:
When the Bluetooth is not connected, the indicator light flashes quickly;
When the bluetooth is connected, the indicator light is always on;
When Bluetooth is playing, the indicator light flashes slowly.


Pin Description:
KEY: button control terminal (4 button functions, need to add additional resistance)
MUTE: mute control terminal (output high level 3.3V when mute, output low level when playing)
VCC: positive power supply 5V (Lithium battery 3.7V power supply requires short-circuit diode)
GND: negative power supply
L: Left channel output
R: Right channel output

MUTE mute control terminal: used to control the power amplifier board, MUTE outputs a high level of 3.3V when muted, and outputs a low level during playback.

KEY button control: This function requires additional connection of resistance and button to realize.

Volume power-off hold function: the default output volume. The volume is controlled by the buttons to increase or decrease. If the control volume is less than 15%, the volume output will be 15% after the power is turned on again; if the control volume is greater than 15%, the original volume will remain unchanged after the power is turned on again.

Product introduction:

   This product MH-M28 is a low-power bluetooth design, supports new bluetooth 4.2 transmission, two-channel stereo lossless playback, after the module is connected to bluetooth, it can quickly realize bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters.
Widely used in various Bluetooth audio reception, various audio DIY modification, etc.

Function Description:

Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo binaural output.
After the module is powered on, the mobile phone searches for the Bluetooth name MH-M28, and the music can be played after connecting to the Bluetooth;

Module blue indicator:
When the Bluetooth is not connected, the indicator light flashes quickly;
When the bluetooth is connected, the indicator light is always on;
When Bluetooth is playing, the indicator light flashes slowly.


Pin Description:

5V: positive power supply 5V
GND: negative power supply
VBAT: Lithium battery positive 3.7-4.2V
L: Left channel output
R: Right channel output
AGND: audio ground

1. Power supply: You can directly use the MICRO USB Android cable 5V for power supply, or you can additionally connect to a 5V power supply or a 3.7V lithium battery. Note that the power supply interfaces of 5V and 3.7V are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.

2. Audio output: The headset can be directly connected to the 3.5mm audio interface, or it can be wired for the audio input of the power amplifier board (the interface L/R/AGND can be wired directly).

Product introduction:

   This product MH-M38 is a low-power bluetooth design, supports new bluetooth 4.2 transmission, two-channel stereo lossless playback, after the module is connected to bluetooth, it can quickly realize bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can reach 20 meters.

Widely used in various Bluetooth audio reception, various audio DIY modification, etc.


Function Description:

1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo binaural output.
2. After the module is powered on, the mobile phone searches for the Bluetooth name MH-M38, and the music can be played after connecting to the Bluetooth;
3. Module blue indicator:
When the Bluetooth is not connected, the indicator light flashes quickly;
When the bluetooth is connected, the indicator light is always on;
When Bluetooth is playing, the indicator light flashes slowly.


Pin Description:
5V: The positive pole of the power supply is 5V.
GND: negative power supply
VBAT: Lithium battery positive 3.7-4.2V
L+/L-: Left channel output (directly connected to the speaker).
R+/R-: Right channel output (directly connected to the speaker)

1. Power supply: You can directly use the MICRO USB Android cable 5V for power supply, or you can additionally connect to a 5V power supply or a 3.7V lithium battery. Note that the power supply interfaces of 5V and 3.7V are different, 5V is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND.

The working current is 5V2A, it is recommended to use a 5V2A regulated power supply for better sound quality.

2. Support USB sound card, no driver (plug and play). Connect the module to the computer with a USB data cable, and the computer can play music through the amplifier output of the module

3. Audio output: Output left and right channel stereo audio signals, which can be connected to two speakers of 2-8 ohms and 3-5W respectively, and 4-ohm 5W speakers are used for storage.

 4. This product has its own dual 5W power amplifier circuit, and must not be connected to another power amplifier for use! The outputs of the two power amplifiers cannot be connected in parallel or the negative electrodes can be connected together, otherwise the power amplifier chip will be damaged.


Precautions:
1. Signal interference: Bluetooth antennas are extremely susceptible to high-frequency or strong electromagnetic signal interference, and should be placed as far away as possible from wireless and other devices. And the board can not be next to the metal object, keep a certain distance.
 
2. If there is current sound when connected to the power amplifier board, the cause is the interference of the ground wire. It is recommended not to use the plug-in wire at the output end of the Bluetooth module. The wire must be welded, especially the ground wire to be welded, and the wire should not be too long, the shorter the better. , as thick as possible. The problem of the audio ground at the ground point of the power amplifier board must be connected to the ground of the audio input end of the power amplifier. This ground point can be welded in different positions to achieve the current sound. It is recommended to separate the power supply for the Bluetooth and the power amplifier board, and isolate the Bluetooth ground and the power amplifier ground.
 
3. Since this product is a bare board design, try not to touch the components on the board with your hands, it is easy to cause static electricity to kill the chip and cause it to burn.
 

Shenzhen Shengtaixin Technology Co., Ltd is electronic components supplier.We specialized in Integrated Circuit,Development boards, WIFI modules, BT modules, power modules, sensor modules, GPS GPRS GSM modules, camera module,etc.

 

We accept Bom list order,provide best quality and reasonable prices,"Quality and serivce is our mission"

 

Because of we have stock many kinds of electronic , so can not upload one by one, if you can't find what you need in our store, please contact us, we will offer in the first time. Thank you in advance.                                                                   

 

Advantage of our company:
1. Wide Products Range: With 1 billion items of electronic components, covering almost all kinds of Integrated Circuits, Diodes, Resistors, Capacitors, Transistors, Sensors, Oscilators, Thyristors,Resonators,Filters,Potentiometers, LCD Module, Electronic Accessories, Electronic Signs, PCB/PCBA Manufacturing, Optoelectronic Displays and Other Electronic Components.

2. Large Stock: We have large stock for our 10000 kinds of different products, and also don't have MOQ limited in stock products.

3. BOM Service: Please send BOM lists to me, I will send quotation very quickly.

 

4. Long Term Service: Life service

 

We specialized in Integrated Circuit,Development boards, WIFI modules, BT  modules, power modules, sensor modules, GPS GPRS GSM modules, camera module,etc.provide best quality and reasonable prices,"Quality and serivce is our mission"

Our Advantages

1. More than 10 years business enable us accumulated much experience in electronic components filed;

2. We're able to control and detect the quality, 100% Guarantee.

3. Lots of parts in our own store and warehouse. Fast shipment is supported;

4. "Customer first, Honesty first" is our principle ;

5. 100% ensure all electronic parts are Brandnew ;

6. Professional and Effective Communication, saving your valuable time.

 

Our Services

1. Listen carefully to customer requests and provide different types of electronic products to meet customer requirements.
2. Respond to customer requests within 10 minutes of working hours to provide the best price to customers.
3. Patience and customer communication, and strive to meet customer requirements.
4. Quickly create a payment order so customers don't have to wait. Accept convenient payment methods: customers can make payment by alibaba trade assurance, Paypal, Credit Card, Bank Wire Transfer, Western Union, etc.
5. Produce high quality products, test, package and produce 100% qualified products.
6. Select the courier company requested by the customer to deliver quickly
7. The customer receives the product and the order is completed.

 

Packaging & Shipping

Packing
We have a professional packaging team. We will use foam wrap to prevent the product from being squeezed and use a solid carton for the outer packaging, which can effectively protect the safety of the product. The outer layer will be completely sealed with tape and can be effectively waterproof. We will assure you that the product will not be damaged during transportation.

 

FAQ

Question	Answer
Q1:Why choose shengtaixin?	1.We are Alibaba Assessed Gold Supplier. 2. We have best quality control, Best Service and competitive Price. 3.100% QC inspection Before Shipment.
Q2:Can I get samples?	Yes, certainly. We will provide the existing samples for free, Sample fee is refundable when you make an order from us.
Q3.What about the lead time?	When you complete the payment, we will send it to you within 1-3 days. According to the courier company you choose, you can receive our products in front of your house in the fastest 3-5 days.
Q4:About the quotation of IC BOM?	The company has the procurement channels of original integrated circuit manufacturers at home and abroad and a professional product solution analysis team to select high-quality, low-cost electronic components for customers.
Q5:What is the payment method we can support?	You can pay by TT transfer, Western Union and credit card through Paypal, which offers total buyer protection;

Any other questions? Feel free to contact us pls.