Altronix eFlow4NX is a power supplycharger converts a 120VAC 60Hz input into a single Class 2 power-limited output. Power supplycharger is selectable for 12VDC or 24VDC with a total of 4A max. It also offers a suite of features that includes fire alarm disconnect, overvoltage protection, and low power disconnect which prevents deep discharge of stand-by batteries.