HC-05 Arduino Wireless Bluetooth Receiver RF Transceiver Module Serial Port Transmitter Module<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>VCC: positive power supply?</li><li>GND: power supply is negative?</li><li>RXD: the receiver， Bluetooth module receives from another device sent data; normally connected to other devices transmitting end TXD?</li><li>TXD: sending end， the Bluetooth module to send data to other devices; receiving terminal is normally connected to other devices RXD</li><li>Brand new and high quality</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51OuenE9ctL.jpg" noproxy>