Note:It's HC-06 Bluetooth module
this module can be set to a transmitter or receiver, transmitter could pairing with receiver , receiver and receiver or transmitter and transmitter can't communication between, receiver could pairing with computers and cell phone bluetooth , when buying, the default for receiver.
It is HC-06.
TTL data transparent transfer between a host Bluetooth device.
Module HC-06 master and slave,two in one.
Build-in CSR company Bluetooth chip BC417143.
Bluetooth specification v2.0 + EDR.
Works with any USB Bluetooth adapters.
Default Baud Rate: 9600,8,1,n.
Coverage up to 30ft.
Built in antenna.
2PCS*30ft Wireless Bluetooth RF Transceiver Module serial RS232 TTL HC-06 for arduino
2PCS Wireless Bluetooth RF Transceiver Module serial RS232 TTL for arduino HC-06