Color Green Brand ElecFreaks Model E00411 Quantity 1 Piece Material FR4 English Manual / Spec No Other Features Bluetooth Shield a serial port Bluetooth module (Master/Slave) breakout board. You can choose ARDUINO's Digital PIN D0->D7 as Software UART to communicate with Bluetooth Shield(and D0 D1 also is Hardware UART) Arduino compatible. Typical -80dBm sensitivity. Up to +4dBm RF transmit power. Fully Qualified Bluetooth V2.0+EDR 3Mbps Modulation. Low Power Operation. PIO control. UART interface with programmable baud rate. Integrated PCB antenna. Packing List 1 x Bluetooth Shield