Bluetooth 4.2 BLE audio module, stereo, MH-M18
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Bluetooth 4.2 BLE audio module, stereo, MH-M18

7.91 RON Tax included

6.65 RON Tax excluded

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Bluetooth 4.2 audio module, M18.

It is a module with low current consumption, supports the latest Bluetooth 4.2, two stereo channels for lossless playback. In open spaces, the distance reaches up to 20 meters.

Lossless WAV/WMA/FLAC/APE/MP3 decoding support, dual channel stereo output.
After turning on the module, the phone searches for the MH-M18 device and can instantly play music.

Supply voltage: 3.7 - 4.2V (via lithium battery) and 5V

Supported Bluetooth protocols: HFPV1.7, A2DPV1.2, AVRCPV1.5, AVCTPV1.2, AVDTPV1.2

Standby consumption: 5.5mA

Operating consumption: 20mA

Deep sleep consumption: 3uA

Button support: Yes

Volume and Mute adjustment: Yes

Functions:

Pine tree Function Description
1 KEY Button control terminal (4 button functions, additional resistors such as wiring diagram)
2 move Mute control terminal (output high level 3.3V when muting, output low level during playback)
3 VDC Positive power supply 5V (lithium battery 3.7V power supply requires short circuit diode)
4 GND Power negative / audio signal ground
5 IT Left channel output
6 R Right channel output

bluetooth_m18_pins_jpg

mh_m18_specs_jpg

More details here

It is recommended to connect the wire directly to GND (without plugs) over a distance as short as possible for a good sound quality.

The antenna of the mod is sensitive to electromagnetic interference, which can cause problems with the quality of the signal.

In MUTE mode, the module outputs a logic voltage of 3.3V and during playback 0V. To change the behavior, depending on the available amplifier, see the following scheme for inversion.

mh_m18_mute_jpg

33354

mh m18.pdf

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