If the controller you are using has not been paired with a receiver, you can use one of the following methods to pair both devices.
Wireless Pairing via Controller
Press the MENU button on the controller, then navigate to WIRELESS>FIND RECV to scan for active receivers and automatically pair. The LED on the controller will turn green once paired.
Wireless Pairing via Receiver
Press the MENU button on the MDR.S, then navigate to WIRELESS>CHANNEL and select the same channel number as the controller to begin pairing. The LED on both the controller and receiver will turn green once paired.
Connect a 5-pin connector from the controller’s wired-mode input to the IN-1 input on the receiver. The controller and receiver will remain paired even after disconnecting the 5-pin connector. The LEDs on the controller and receiver will turn blue once paired.