524aa351_BlueSMiRF___learn_sparkfun_com__Input__Output__Power_
[Pin Label] GND [Pin Function] Ground [Description] The 0V reference voltage, common to any other device connected to the Bluetooth modem. [Input, Output, Power?] 
Power In
O u t p u t
I n p u t
P o w e r I n
Using the BlueSMiRF - learn.sparkfun.com
Input, Output, Power?