Bluetooth Bee is an easy to use Bluetooth SPP module compatible with existing Xbee sockets, designed for transparent wireless serial connection setup.It can be configured to Master, Slave or Loopback three different modes(HC-06 just be Master/Slave, coulud be customized), and it will connect to or be connected by other devices that support SPP protocol per configuration, and it is a suitable substitute for most applications. Bluetooth Bee is designed for transparent wireless serial connection setup. This is a fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps modulation with complete 2.4GHz radio transceiver. It uses CSR Bluecore4-external single chip Bluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping). Note:Paired must Master devices and Slave devices each other. Master and Master devices ,Slave and Slave devices can't paired each other. The Slave mode could paired with PDA, PC etc.We recommend assemble with Arduino XBee/Bluetooth Bee USB Adapter or XBee Shield with logic level converter.