FUTABA T32MZ Instruction Manual page 117

Next explanation is required when using two or more the same kind of sensors.
It is a case where a sensor is registered manually here.
This item is unnecessary if "Sensor unit registration" is performed.
ID of the sensor registered into each slot can be changed manually. Alternatively, registration
of the sensor may be accomplished through the sensor unit registration function which
follows. (ID is inputted automatically)
＜ Linkage Menu ＞
117