524aa351_BlueSMiRF___learn_sparkfun_com__Input__Output__Power_
[Pin Label] RX-I [Pin Function] Serial receive [Description] This pin receives serial data from another device. It should be connected to the TX of the other device. [Input, Output, Power?] 
Input
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?