ok well first im new to all of this but im working on somthing that i need help with. I need to find out how to transmit a signal wirelessly. OK so i will have a circuit with a temperature sensor and a pressure switch i need it to where when the temperature sensor reads between 97 and 103 degrees and the pressure switch is active it sends a signal wirelessly to a reader. I hope that makes sense its kind of confusing for me. all this is going in a small space but the singal only needs to go about 4 feet i was thinking about RFID but i dont know if it would work. Mabey bluetooth???? help me please