The Teradek MDR.S Receiver 3-Pin R/S Power Cable (15.7-inch) is the dedicated dual 3-pin power cable for select Teradek receivers, like the Teradek MDR.S 3-Channel Lens Control Receiver w/ Bluetooth. One end of this cable connect to the 3-pin port of the receiver, while the other end supports ARRI run/stop and connects to an available power source.