PA-703 is a 3-pin XLR to SpeakON NL4FX power cable, with 15A power load and 2 meters cable length. You can connect to 3-pin XLR DC48V power sources like SWIT VOLTA-DC1600, VOLTA PRO or TD-R230S, and supply power to SpeakON NL4FX DC connector devices like NANLITE Forza300/500, Dyno 650C, Lightstar Luxed4, etc.
