This is the Futaba R3008SB T-FHSS 2.4GHz Receiver.
FEATURES: Bi-directional communication with a T-FHSS Air-2.4GHz Futaba transmitter using the S.BUS2 port Standard PWM output ports and S.BUS output ports
INCLUDES: Futaba R3008SB T-FHSS 2.4GHz Receiver with Dual Diversity (two) Antennas and Instructions
SPECS: Size: 0.98 x 1.86 x 0.56" (24.9 x 47.3 x 14.3mm) Weight: 0.36oz (10.1g) Power Requirement: 4.8-7.4V Battery F/S Voltage: Sets up with a transmitter Extra Voltage Port: 0 ~ 70V DC
COMMENTS: Not compatible with S-FHSS/FHSS/FASST/FASSTest systems.