SL-L50  (35W , single color, dimmable LED studio light by knob, without battery plate, without controller) 

SL-L50D  (35W , single color, dimmable LED studio light by knob & a universal remote controller , with a V-lock battery plate) 

SL-L50DT (35W ,Bi color, dimmable LED studio light by knob & a universal remote controller , with a V-lock battery plate) 

SL-L50DAT (35W ,Bi color, dimmable LED studio light by knob & DMX control)