choose module：
Thereinto:
1.Volt output:2V ,3.3V ,5V ,10V ,12V ,15V
,24V ,28V ,48V,95V,220V,300V
2.Power output:50W ,75W ,100W ,150W ,200W，400W，600W,1000W,2000W.
3.Grade： M -
Military ,I - Industry，C-Commercial
Annotation: User can choose arbitrary volt out
between 1-500V.
Use
and maintenance :
Power supply
should be fixed in condition airiness and no other article.
