The SCUPS Supercapacitor UPS 24 VDC Model 1023 SuperCapacitor based Uninterruptible Power Supply is designed to provide nominal 24VDC power when a units 24VDC line power is interrupted. In addition, several digital signals are available to alert the host system that supplemental power is in use, and to provide a state of charge (SOC) indication. User applications can use digital signals to commence an orderly shutdown operation and can use the SOC signals to gauge the level of energy in the super capacitor. Once Primary power is restored, the units super capacitor is recharged and becomes ready for the next power interruption event