XBee Shield with Logic Level Converter is an enhanced serial port XBee module breakout board.It can directly plug in with Arduino and use D0-D3 of the basic board to connect with the XBee module.Its SPI and UART bus is convert the logic level 5V to 3.3Vand it's stackable you can connect the 3.3V IO module or shield to this shield directly. The "Logic Level Converter" show in the below allowed your Arduino board connect to different IO logic level module safety. - With Logic Level Converter (3.3V to 5V or 1.8V to 5V or 1.8V to 3.3V) - With CC1101 module connecter - Provide maximal 800mA under 3.3V - 4 indicator LED (RSSI ASS Din Dout) for XBee - Switchable of communication with FTDI-USB /Base board - Full 2.54mm break out for XBee - With wireless program hardware interfaces - Reset button for base board - Stackable interfaces