Telemetry System; Telemetry Sensor (Sold Separately); Slot Number - FUTABA T10J Instruction Manual

The R3008SB receiver features bi-directional communication with a T-FHSS Air Futaba
transmitter using the S.BUS2 port. Using the S.BUS2 port an impressive array of telemetry
ports.
*Telemetry is available only in the T-FHSS Air mode.
Servos are classified by channel, but sensors
are classified by "slot" . Since the initial slot
number of the T10J is preset at each sensor,
the sensors can be used as is by connecting
them. There are 1 31 slots.
Your aircraft's data can be checked in the
transmitter by connecting various telemetry
sensors to the S.BUS2 connector of the
receiver.