300W 10A DC-DC Step-down Adjustable Constant Voltage Module

Material: PCB board and electronic component
Color: as the pic shows
Input voltage: 5-40V
Output voltage: 1.2-35V (continuously adjustable)
Output Current: 9A (power tube temperature exceeds 65?C please add cooling fan)
Constant current range:0.2-9A ( adjustable )
Output Power: Maximum power is about 300W (power tube temperature exceeds 65?C please add cooling fan)
Size: Approx. 2.55*1.88*0.94inch / 6.5*4.8*2.4cm(Length*width*thickness)