Bảng mạch khuếch đại âm thanh tai nghe Bluetooth 4.2

Product profile:

This product mh m18/m28/M38 is a low power consumed design case for the Pleasant Case, support for the latest 4.2, the binoculars are not destroyed, after the gnawing, you can quickly realize the wireless, it's very convenient. Open environment, the distance of the gnawing can reach 20 meters. It is widely used in various kinds of madness, all kinds of sounds are male and female.

Different customer needs, we offer 3 versions for you to choose from
Functional description:

Version 4.2, supporting the Brightening Automatic Connection Technology, supporting the mishap/xantham/\ x {5db2} a/icy 3 without destruction decoding, between the two voices are the male and the female.
After electricity, the mobile phone searched for the name mh m18/mh M28/M38, and the martyrs were mixed with the melancholy music
Glasses and Roses:
When not connected, the indicator lights flash fast

When connecting to a berry, light is always bright

When it comes to grease, the indicator lights flashed slowly.
Notes
Signaling: Roster antennas are extremely vulnerable to high frequency or strong electromagnetic signals, place as much as possible in the place of the equipment such as the wireless. And the board can't be next to the metal objects, keep a distance.


If the plate is connected with the current sound, caused by ground lines, it is advisable not to insert cords in the mishap, glass welding, especially if the ground line is to be welded, and the thread can't be too long, the shorter the better, try to be coarse. Problems with audio location of plate reception, returns to the end of the input of the merry amplifier audio, this location can be welded at different locations, achieve the lowest current sound. Suggested merry and amplifier panels for electricity supply, get the best out of it.


Because this product is naked board design, try not to touch the devices on the board with your hands, easy to cause static electrostatic chips to kill the chip causing burns.
Warning: Pleasant male and female sterile products, no business as usual For the sake of your life and property, please make sure you use the lithium with protective plate produced by the merchant., loss due to improper use, we do not assume any responsibility

Separate: For mh m18 use, the following two points should be noted::

Electricity supply: Acceptance uses 5 v to supply electricity. If there is a need to use lithium.7 for electricity, need for diodes (As shown in the figure) Er 0 for 0603, or directly short circuit the ends of the welding plate. Relaxation 5v Power Supply, if the customer needs 3. 7 for lithium-mishap electricity can be customized in batch.


The high requirement of the madamships will affect the quality of audio, it is recommended to join the filtering of the mishap., in particular, petriform Power Supply (E.g. mobile phones, etc.)。

Pleasant milk stickers: This is a sticky melancholy when the port should be high electricity 3.3., when the merry gnawing low