This is a HC-06 Bluetooth Transceiver HC06 with TTL Output for Arduino for use with any microcontroller. It uses the UART protocol to make it easy to send and receive data wirelessly. The HC-06 module is a slave only device. This means that it can connect to most phones and computers with Bluetooth but it cannot connect to other slave only devices such as keyboards and other HC-06 modules. To connect with other slave devices a master module would be necessary such as the HC-05 version which can do both master and slave.

HC-06 leads to interface includes VCC, GND, TXD, RXD, aside LED status output pin, the microcontroller via the pin state judge whether Bluetooth connection, KEY pin on the slave invalid.

LED indicate Bluetooth connection status, flashes indicates no Bluetooth connection, Always indicate the Bluetooth port is connected and turned on Backplane 3.3V LDO, the input voltage 3.6 ~ 6V, unpaired when the current approximately 30mA, paired about 10mA, the input voltage must not exceed 7V! With interface level 3.3V, you can directly connect a variety of SCM (51, AVR, PIC, ARM, MSP430, etc.), 5V microcontroller can also be directly connected, it can not pass without MAX232 MAX232!

The module has a full-duplex serial port to use later, when paired, without knowing any Bluetooth protocol, but only supports 8 data bits, 1 stop bit, no parity communication format, which is the most common communication format, not support other formats.

In the Bluetooth connection is not established when setting the baud rate supported by AT commands, names, matching password, set the parameters of power down to save. After the Bluetooth connection automatically switches to transparent mode

Features :

Typical ‐80dBm sensitivity.
Up to +4dBm RF transmits power.
Low Power 1.8V Operation, 3.3 to 5 V I/O.
PIO control.
UART interface with programmable baud rate.
With integrated antenna.
With edge connector.
Slave default Baud rate: 9600, Data bits:8, Stop bit:1,Parity:No parity
Auto‐connect to the last device on power as default.
Permit pairing device to connect as default.
Auto‐pairing PINCODE:”1234” as default.
Auto‐reconnect in 30 min when disconnected as a result of beyond the range of connection.
Applications of HC-06 Bluetooth Module with Base.
It is used in Electronic projects.
Bluetooth based Robotic projects using 8051/AVR/PIC/ARM/NXP/Infineon microcontroller.
It is used in all types of wireless communication purposes.

Specifications:

Input Supply voltage (V)	3.6 ~ 6
Input current (mA)	50
Maximum Operating Range (m)	10
Operating Frequency	2.4GHz ISM band
Modulation	GFSK (Gaussian Frequency Shift Keying)
Emission power	4dBm, Class 2
Sensitivity	-84dBm at 0.1% BER
Operating Temperature (℃)	-20 ~ +75
Length (mm)	43
Width (mm)	16.5
Height (mm)	7
Weight (gm)	5