Input voltage: 3.6V-6V, prohibit exceeding 7V Leads 6 feet: EN / VCC / GND / RXD / TXD / STATE (Bluetooth state leads, not connected output low level, the output high level after connection) With the connection status indicator, LED flash indicates no Bluetooth connection; Led slow flash indicates enter at command mode On-board 3.3V voltage regulator chip, the input voltage DC 3.6V-6V; When not paired, current about 30mA (because LED lights flashing, current in the state of change); After the pairing succeeds, the current is about 10mA Interface level 3.3V, you can directly connect a variety of microcontroller (51 / AVR / PIC / ARM / MSP430 etc.), 5V microcontroller can also be directly connected Directly connected to the microcontroller serial port, not through the MAX232 chip Open area effective transmission distance of 10 meters After the pairing is successful, can be used as a full-duplex serial interfaces. Without knowing any of the Bluetooth protocol, but only supports 8 data bits, 1 stop bit, no parity communication format You can switch between Receiver and Transmitter mode via AT commands Modules default baud rate is 9600, the default passkey is 1234, the default name for the HC-05 Wiring method: VCC: Connect the power supply positive GND: Connecting the cathode RXD: The receiver, the Bluetooth module receives data from other devices, and the sending end TXD of the other devices normally TXD: Send end, Bluetooth module sends data to other equipment; the receiving end RXD of the other equipments normally En: To enable the end, need to enter the at mode when 3.3V Note: this item doesn't works with iOS. Package included: 5 X HC-05 6 pin wireless bluetooth RF transceiver module

Note: The module doesn’t suitable for IOS system. HC-05 Wireless BT Module: with this HC 05 Bluetooth module,You can quickly add the Bluetooth feature to your motherboard project, and then you can use your android phone to control some gadgets, such as: switch, LED. HC-05 is able to operate in both master and slave mode. Its communication is via serial communication which makes an easy way to interface with controller or PC. It's ideal replacement to your wired serial connection. Master and Slave 2-IN-1 HC-05 Module; Working Voltage 3.6V to 6V; Default baud rate:9600, Button: Press the button; the module enter the AT mode. AT commands are executed only in AT mode. HC-05 Bluetooth Module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup.