KRC-86B V4.0 Bluetooth Stereo Audio Receiver Module

Description: 
Bluetooth refers to a wireless transmission technology that allows computers, cell phones, car radios, wireless gadgets ... to communicate with other Bluetooth-enabled devices.
The use of Bluetooth Stereo Audio devices has increased over the years with such modules being used in various applications, with their use extending from vehicles to smartphones.
KRC-86B V4.0 is based on the CSR 8630 Bluetooth chip that is perfect for creating your own wireless speaker or headphones or for any other use where you need to add a Bluetooth audio receiver to your project. 
It also supports an AUX input with automatic source selection.

Features:
Model: KRC-86B
Bluetooth version: 4.0 plus EDR
Bluetooth chip: CSR8630 (supports A2DP, AVRCP)
Operating Voltage: 3V~5.5V
It supports two devices simultaneous connection 
Non-multi-plate patchwork 
Stable performance
Featured by automatic control technology, without key operation
Support automatic power-off connection function.
Size: 30mm x 30mm

Pinout:
VCC: Positive power supply 3V-5V
GND: Negative one
LED+: Connected diode anode
LED-: Connected diode cathode
AGND: connected to an audio signal Cathode
OUTR: Right Output
OUTL: Left Output
INR: AUX right input
INL: AUX left input
COM: Button common terminal
Play / Stop: Play / Pause
VOL + / NEXT: short press next song, long press volume up
VOL – / REV: short press last song, long press volume down
EN: Bluetooth connection is high level (3.3V), disconnect the Bluetooth low level
NC: Function Reserved

Package Include:
1 x Module 
1 x LED 
1 x Capacitance