DOMETIC SINEPOWER MSI 1812T The Dometic SinePower MSI 1812T turns 12 V battery power into pure 230 V AC voltage, like power from a home socket. It ensures a trouble-free mobile operation of 230 V appliances, even highly sensitive ones. The extraordinarily high-peak output rating makes it ideal for devices with high start-up currents. The integrated mains priority circuit ensures that the inverter automatically switches over to an external mains supply as soon as it is available – saving precious battery power. The MSI 1812T will shut down if it experiences over-voltage, under-voltage, excess temperature or incorrect polarity.