This board breaks out all pins of the XBee to 2.54mm pitch.You can add a bypass capacitor and/or LED indicators ("ON" and "Associate / AD5") by yourself. These parts are not included in this kit. For detail, please see schematic in the document part.You can use • For LEDs, 3mm diameter radial PTH or 0603 (1608 metric) SMD. • For resistors, 5mm length axial PTH or 0603 or 0805 (1608 or 2012 metric) SMD. • For capacitor, 100mil (2.54mm) pitch radial PTH or 0603 (1608 metric) SMD. • You need to short solder jumpers side of the resistors if use LED indicators.PART LIST • 1 x PCB (25.4mm x 29.21mm) • 2 x 2mm pitch 1x10pin socket • 1 x 100mil (2.54mm) pitch 1x40pin break away headerDOCUMENTSSchematicNOTENo XBee radio module included.