... fan,to achieve a double cooling,It makes the power supply stability and service life to doubled! Also, the ... ,over current ,over temperature ,short current, protection against lightning,etc., to ensure the power supply safe. Meanwhile, this power have ... , under voltage, over load ,over current ,over temperature ,short current.etc.SECURITY CERTIFICATE3C,CE,ROSH .Lead free processMTBF50000 hoursAFTER ...