Specification: 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. Mini Size. Package Included: 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