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HC-05 Master-Slave Wireless Bluetooth Module
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Parameter

1 Size: 37.3*15.5mm

2 Input voltage: with 3.3V LDO voltage stabilizing chip, 3.6V - 6V, don't over 7V

3 Anti-reverse connection of power supply, anti-reverse connection diode set on bottom plate, anti-reverse connection module not working

4 Lead out 6 pins: VCC/GND/RXD/TXD/STATE (Bluetooth status lead out pin, output low level not connected, output high level after connected) (module power enabled, default high level. Connect low level module power off)

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