This is the Futaba R7003SB FASSTest 2.4GHz Bidirectional S.BUS2/S.BUS Port and Conventional System Receiver.
FEATURES: Compatible with Futaba FASSTest 2.4GHz transmitters One year limited warranty through Hobby Services beginning at date of purchase.
INCLUDES: Futaba R7003SB FASSTest 2.4GHz Receiver with EXT-VOL cable and Instructions
REQUIRES: S.BUS2/S.BUS servos
SPECS:
Dimensions: 0.89 x 1.47 x 0.37" (22.5 x 37.4 x 9.3mm)
Weight: 0.25oz (7.2g)
Power Requirement: 3.7-7.4V (voltage range, 3.5-8.4V)
Extra Voltage Port: (port2) "EXT-VOL cable and CA-RVIN-700" of an option is used: 0 - 70V DC
COMMENTS: If this receiver is not used with an S.BUS2/S.BUS system, only three channels are operational. If used with an S.BUS2/S.BUS system the maximum number of channels of the transmitter can be used.