1×LED for indicating power
1×LED for any applications at D13
3×LED for indicating associate pin status of XBee module
1×Reset button
1×Switch for selecting between using power from Arduino Mega or terminal block

1×Arduino shield compatible headers
40×3-pin male pin header for digital I/O in GVS form factor, Gravity compatible
10×3-pin male pin header for analog input in GVS form factor, Gravity compatible
1×4-pin male pin header for I2C, Gravity compatible
3×4-pin male pin header for UART in 5V/GND/TX/RX form factor
8×3-pin male pin header for power
1×2-port terminal block for power at 7~12 Vdc
1×ISCP header
3×XBee-PRO interface
1×microSD card socket
1×Prototyping grid with some pads connected to GND, 3.3 Vdc, 5 Vdc

125 mm×57 mm