Seeed 315mhz rf transmitter and receiver link kit seeed studio 113990017 p the 315mhz rf transmitter and receiver kit from seeed studio consists of one transmitter and one receiver and is useful for remote control projects that don t require two way communication to attach one of these modules to a microcontroller you need to supply power and 1 digital data line so it s very light in terms of gpio pins p p seeed provide technical documentation example projects and software libraries on