This is an AC/DC power converter. It supports AC100V-240V, so it is compatible not only with Japan but also with countries around the world. It allows you to use car accessories with a cigarette lighter power supply at home using a wall outlet. Applications: Home Security/Video Surveillance Systems: CCTV, DVR, NVR, IPC, series cameras LED Light Strips: Christmas LED light strips, LED table lamps, 3528 LED tape lights Communication Electronics: Audio-Technica microphone receivers, wireless intercoms, wireless routers, ADSL, speakers Home Appliances: Phones, tablet computers, digital picture frames, PCs, portable DVDs, LCD monitors, audio, video equipment Other 12V 3A devices: HUBs, switches, HDMI splitter switches, surveillance cameras, tuners, etc. Compatible with car electrical products with an output of less than 36W, such as car fans, car insulated cups, Gorilla navigation systems, car security systems, portable devices, and car navigation systems. *Please determine compatibility based on the input voltage, input current, and plug size of your device. ■ Input Voltage: 100V-240V, 50~60Hz, 1.2A ■ Output Voltage: DC 12V 3A 36W ■ Output Current: 3A ■ Output Characteristics: Constant voltage output ■ Cable Length: 68cm