The R2104GF is designed for use with the Futaba S-FHSS or FHSS system transmitter.
R2104GF Specifications:
4-channels
Receiving on 2.4GHz band
System: S-FHSS/FHSS system (auto detection)
Operation mode: Normal/High speed (auto detection)
Power requirement: 4.8V or 6V (shared with servo)
Current drain: 30mA (at no signal)
Size: 39 x 26 x 10 mm
Weight: 8 g
Compatible with:
T2PL-2.4G
T3PL-2.4G
T4YF-2.4G
T4PL
T4PLS
T4PV
T4GRS
T4PX
T7PX