This Tilta Wireless Control Receiver for Select DJI Gimbals mounts directly on the RSA port of your DJI RS 2, RS 3 Pro, or RS 4 Pro to remotely control the camera and gimbal using your Tilta Remote Control Handle. The NATO clamp connector that attaches to the RSA port of your gimbal allows the receiver to source power from the gimbal itself, so no batteries or cables are needed.