... Only manufacturer in shenzhen have patent 2012 new design 12V ups CCTV power supply: Features:1. Circuit Short protection2. Over- ... status, when condition removed, then switch back to normalUPS functionUninterrupted Power Supply,when power cut,it also could work by the ... , when condition removed, then switch back to normalUPS functionUninterrupted Power Supply,when power cut,it also could work by the ...