Futaba R203GF 3-Channel S-FHSS Receiver (Rx) Frequency Hopping Spread Spectrum (FHSS) technology minimizes interference from other 2.4GHz systems Ideal for the 3PRKA 2.4GHz FHSS 3-channel radio Easy Link prevents unwanted signal conflicts by using a special, pre-assigned ID code High-voltage, 4.8V-7.4V operation One year limited warranty