Futaba 4YF 4-Channel 2.4GHz FHSS Transmitter with R2004GF Receiver An ideal choice for budget-conscious pilots The transmitter and receiver link securely with the push of a button All-channel servo reversing for more installation options Power Down mode reduces RF power for 90 seconds to simplify ground checks for interference Includes 4YF tTransmitter, R2004GF receiver, on/off switch harness, neck strap, and instruction manual