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   "name": "M28 Wireless Bluetooth Audio Receiver Board Module",
   "description": "This product M28 is a low-power Bluetooth design solution that supports the latest Bluetooth 4.2 transmission, 2-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. Power supply: It can be directly powered by the MICRO USB Android cable 5V, or it can be connected to a 5V power supply or a 3.7V lithium battery. Note that the 5V and 3.7V power supply interfaces are different. The 5V voltage is connected to 5V and GND, and the 3.7V lithium battery is connected to VBAT and GND. 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 (interface L/R/AGND can be directly wired). Specifications Bluetooth version: Bluetooth V4.2 Operating Voltage: 5V/3.7V-4.2V Connection work status: 20mA Operating Temperature: -40C to +85C Pin definition: 5V: Power positive 5V GND: Negative power supply VBAT: Lithium battery positive 3.7-4.2V L: Left channel output R: Right channel output AGND: audio ground Function: 1. Bluetooth V4.2 version, support Bluetooth automatic connection technology, support WAV / WMA / FLAC / APE / MP3 lossless decoding, stereo dual channel output. 2. After the module is powered on, the cell phone searches for the Bluetooth name XFW-M28, and can play music after connecting Bluetooth. 3. Module blue indicator: When Bluetooth is not connected, the indicator flashes quickly; when Bluetooth is connected, the indicator is always on; when Bluetooth is playing, the indicator blinks slowly. This board use AC21BP0XXXX Chip More Information Same Spec Items - SKU A-4607 Manufacturer 100 Electronics MPN M28 Can be used with - Customer Ratings 5/5 Based on 1 reviews 5 Stars 3 4 Stars 0 3 Stars 0 2 Stars 0 1 Star 0 Write a review Price Quality Value Jan 28, 2021 MH-M28 I could not believe the quality of the sound out of this miniature pcb when I connected my cell phone, via bluetooth, to my stereo tube amplifier! The supply is a hefty 12V 9800mAh ion lithium rechargeable battery come into manners with a parallel 78L05 voltage regulator that feeds the circuit with the 5V, 20mA that the circuit needs. Absolutely in love with this super small and inexpensive circuit! David Garrido",
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     "value": "20 mA",
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