XLR4 DC IN (12V)  x1, XLR4 DC OUT (12V) x1,

MINI4P DC OUT (12V/8.4V), lithium-ion battery input x1,  Tripod screw 1/4 inch with camera screw turn prevention x1 and spare tripod screw x1,
BNC extension terminal x3, Circuit built-in which continues to send a power to the camera even if it short-circuits with Canon 4 P output. 
Light can be used.
Just fit shoulder pad,
Operation T: 0℃〜40,
Storage T: -20℃〜60,
Size 153x240x449mm (WHD),
Weight: approx. 1.5Kg
ST-7JS Main Specifications

XLR4 DC IN (12V)  x1, XLR4 DC OUT (12V) x1,

MINI4P DC OUT (12V/8.4V), lithium-ion battery input x1,  Tripod screw 1/4 inch with camera screw turn prevention x1 and spare tripod screw x1,
BNC extension terminal x3, Circuit built-in which continues to send a power to the camera even if it short-circuits with Canon 4 P output. 
Light can be used.
Just fit shoulder pad,
Operation T: 0℃〜40,
Storage T: -20℃〜60,
Size 104x170x449mm (WHD),
Weight: approx. 1.0Kg
ST-7JS Outside Dimension

153cm

240cm

449cm