nothing more, that is, there are no surcharges for unnecessary digital indicators and other things. Input - plus and minus 12 V and output 220 V, switch. The wires are of normal section, the crocodiles are powerful. I won’t even connect to the cigarette lighter - the wires are thin, only for lighting. I connected a building hair dryer: 1000 W pulls, 2022 W - protection works after 20 seconds. I am very pleased with the purchase.