Like the MultiPlus, the Quattro is also a device consisting of an inverter and a charger. It also accepts two AC inputs and automatically connects to the active input. The Quattro can be connected to two independent AC power sources, for example, shore power and a generator, or to two generators. It will automatically connect to the active power source. The main output has a "no-break" function. In the event of a blackout, or if the grid or generator is disconnected, the Quattro takes over the supply of the connected loads.