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