4.0 bluetooth Audio Receiver Module Mono For DIY Wireless Audio Speaker Amplifier Modification JDY-61

Feature: PCB size: 23 x 15 x 2.4mm Pin spacing: 2.54mm PIN Function Description 1 VCC Voltage range 4.2-5V, can not exceed 5V power supply 2 LED Play music flashes, stop playing constantly lit 3 MUTE High level when muting, default low level 4 AUDIO Audio output pin 5 KEY Empty pin 6 GND Power ground Package includes: 1 x 4.0 bluetooth Audio Receiver Module