About the voltage: The input voltage is DC 12V， very safe to install and use. (2 connection wires， no distinction between positive and negative). Our floodlights can connect to battery BUT will need extra adapter (over 15W) while input volt is over 12V. Durable and Safety: Our outdoor floodlights get CE and FCC certification and provide advanced aluminum heat sinks. Great for battery work light， car boat light， fishing light.They can work 50，000h， saving 80% your electricity bill traditional halogen lamps. Weatherproof: IP65， metal aluminum shell and advanced heat sink make our landscape lights fully functional both indoors and outdoors in bad weather. Suitable for garden， trees， building facades， yard， garage. Easy installation: 150 adjustable， 11 x 8.5 x 8.5 cm， mini work light can adjust the direction you like and space-saving.Come with a yoke-style arm， mount the monitor in landscape or portrait orientation， easy to beam angle .It can be ceiling， wall and background mounted.