ITEM NAME:Blue 4 Pin HC-06 RS232 Wireless Bluetooth RF 5V Transceiver Module +Cable f E6C8 Blue 4 Pin HC-06 RS232 Wireless Bluetooth RF 5V Transceiver Module +Cable f E6C8 Commercial Series: Bluetooth module board Series. With LED indicator light, use 150mA and 3.3V regulation chip. With VCC,GND,TXD,RXD foot for the Bluetooth. With "Re-seach" button(ON/OFF/WAKE foot for it , external MCU outinput "High level" can control module to re-seach). Compatible with bluetooth master module, slave moduleor master-slave(whole) module. Color: Blue Material: Metal plastic Note:It's HC-06 Bluetooth module Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer. Works with any USB Bluetooth adapters. Default Baud Rate: 9600,8,1,n. Built in antenna. Coverage up to 30ft. Bluetooth version: V2.0+EDR Operating voltage: 3.3V Default Baud Rate: 9600,8,1,n. Signal coverage: 30ft Cable length: 21.5cm Item size: 4.3 * 1.6 * 0.7cm Item weight: 3g Note: input power supply 3.3~6V, Prohibit more than 7V No "Automatically prevent power supply peversing func", so please correctly connect power supply We advise to install "Bluetooth master module" The "State" is output foot for LED status, when bluetooth "Unconnected", output "Pulse" ; when bluetooth "connected", output "High level", we can determine the states from "MCU" If only the board , No any "Bluetooth Function " Note: The baud rate is not adjustable Package Included: 1x HC-06 bluetooth module with backboard 1x cable Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Compatible with bluetooth master module, slave moduleor master-slave(whole) module. Note:It's HC-06 Bluetooth module. With VCC,GND,TXD,RXD foot for the Bluetooth. Allows your device to both send or receive the TTL data via Bluetooth technology without connecting a serial cable to your computer.