need an idea for wireless signaling.
I want to make a simple wireless transmitter that can be used for a signal line for a project. I technically want to push a button at one end, and at the other end have it so it is like the button was pressed there. I would like it to have a range of about 30 yards (preferably without going over government limits)... Could i do this with just a transmitter and receiver?? Where could i get them (i have an order at digikey, so if there were a way i could get them and add to my order it would be great)? Any ideas?