Simply plug it into your car's cigarette lighter socket to provide power from two sockets. The total power consumption of connected devices can be up to 120W (10A). I purchased this several years ago and used it for about a week before storing it. I did not use the anti-theft function. The anti-theft function operates on three button batteries (LR-44), but please be aware that if you use the anti-theft function, the batteries may need to be replaced due to the passage of time. Also, there are only 1 key instead of the original 2. The items to be shipped are all shown in the photos. Instruction manual included. ■ Anti-theft socket Power supply: DC12V (negative ground vehicle) Maximum current range: 10A (12V) Operating temperature range: 0℃ to 40℃ External dimensions: 80 (width) x 60 (height) x 32 (depth) mm Cable length: Approximately 80cm Weight: Approximately 130g