This was modelled from a 500W DC to AC power inverter. The main body is approximately 198mm long (222mm if you include the terminal posts at the back) by 100mm wide and approximately 55.5mm high. The data sheet did not dimeion the top curve or the cooling fi very well so some of these measurements are inferred as best as I could. The front switch is also just a best guess.The plug hole dimeio are reasonably accurate and the LED's are accurate. The terminal posts on the rear are also mostly accurate. This unit was 12V DC in to 240V AC out at 500W max.