Futaba - R7108SB FASSTest/S.Bus2 8 Channel Receiver
R7108SB - FASSTest Bi-Directional Communication System S.Bus/S.Bus2 Port and 8 Channels for Conventional System Receiver
24.9 mm x 47.3 mm x 14.3 mm 0.98 in x 1.86 in x 0.56 in 12.0 g / 12.0 g 3.7 V to 7.4 V (Voltage Range: 3.5 V to 8.4 V)
Specifications: