5PCS HC-06 RS232 Wireless Bluetooth Serial Port 4 Pin RF Transceiver Board Module Bi-Directional Serial Support Slave and Master Mode

Works with any USB Bluetooth adapters, running
in slave role: Pair with BT dongle. Led indicate Bluetooth connection status, flashing Bluetooth connectivity, lit the Bluetooth connection and open a port Backplane, when the bluetooth connection has not been established by pairing the AT command set baud rate, name, password, and set the parameters of the power save. After the bluetooth connection automatically switch to passthrough mode.
Using HC - 06 from module, which leads to the interface includes VCC, GND, TXD, RXD, reserved LED state output pin, MCU can state whether the bluetooth is connected through the foot, from machine KEY pin is invalid.
Interface level 3.3 V, the input voltage 3.6 ~ 6 V, current when the unpaired about 30 ma, matching after about 10 ma, no more than 7 V input voltage, can be connected directly to all kinds of single chip microcomputer, 5 V single chip can be connected directly, without MAX232 couldn' t through MAX232.
The module is mainly used for short-range data wireless transmission, such as Bluetooth wireless data transmission, Industrial remote control, telemetry, Traffic, underground positioning, alarm, Smart home ect.
Industrial serial port bluetooth, Drop-in replacement for wired serial connections, transparent usage. You can use it simply for a serial port replacement to establish connection between MCU and GPS, PC to your embedded project and etc.