RadioLink R9DS 2.4G 9CH DSSS Receiver for RadioLink AT9 AT10 Transmitter RC Helicopter Multirotor Support S-BUS
DSSS /3ms Top speed response /4096 Resolution/ HV support/S.BUS
Compatible with TX : AT10 and AT9
When you use the R9D, you need to bind. After binding finished, you don't need to bind again in the second time use. Power on the transmitter and receiver, press and hold the binding key for one second till the red LED starts flashing. When it keeps red, it means binding is finished.
CH9 is usually used for PWM or S.BUS. The blue LED means S.BUS output and red means PWM. Short press binding key two times within one second to change output from PWM to S.BUS.