About Futaba S.Bus2:
Different from conventional radio control systems the Futaba S.Bus System uses data communication to transmit control signals from a receiver to a servo, gyro, or other S.Bus compatible device. This data includes commands such as "move the channel 3 servo to 15 degrees, move the channel 5 servo to 30 degrees" to multiple devices. The S.Bus devices execute only those commands for their own set channel. For this reason, it can be used by connecting multiple servos to the same signal line. 

With the S.Bus2 system, telemetry sensors can be used for Futaba telemetry capable transmitters and receivers. Data and alerts can be directly available on radios such as the Futaba 14SG and 18MZ.