All features of a sine wave inverter and charger in one compact enclosure. UPS functionality: seamless transfer from external AC to inverter supply. A unique AC power management system will prevent overload of a limited AC source. First, battery charging will automatically be reduced when otherwise an overload would occur. The second level will boost the output of a generator or shore side supply with power taken from the battery: where peak power is often required only for a limited period, the Phoenix MultiPlus will make sure that insufficient shore or generator power is immediately compensated for by power from the battery. Models range from 800VA to 3000VA per module. Scalable: any number of units can be paralleled in single phase, split phase and three phase configuration.