A master-slave module can pair with most computers， smartphones， PAD and PSP with bluetooth function.

Features:
A master-slave module can pair with most computers， smartphones， PAD and PSP with bluetooth function， and slave module can't pair with slave module.
With VCC/GND/TXD/RXD foot for the bluetooth.
With LED indicator to show the status.
Compatible with bluetooth master module， slave module or master-slave module.
Potter rate in default mode is 9600.
With transparent heat shrinkable tube.

Specifications:
Working Voltage: 3.6-6V
Item Size: Approx.37 * 15mm / 1.5 * 0.6mm
Item Weight: Approx.4g / 0.1oz

Wiring instructions:
VCC: Connect to positive power source
GND: Connect to negative power source
RXD: Connect to receiving terminal
TXD: Connect to sending terminal

Note:
The working voltage is 3.6-6V， and 7V is forbidden.
Please make sure that you know how to use it before using.

Package List:
1* Bluetooth module