Power the RTMotion MK3.1 Receiver from the 12V port on the REDVOLT XL module, RED BACKPACK QUICKPLATE or ARRI Alexa. - Hirose to LM 0B - 60cm Length Compatible with; - ARRI Alexa - output is 12V, 2.2 A - RED BACKPACK QUICKPLATE - output is 12V, 3.8 A - REDVOLT XL Module - output is 12V, 3.8 A