C-TEC 2410-10 is a capacitor buffered power supply. This buffer model has ultra-capacitors that act as energy storage inside the housing. An external regulated DC-power supply charges the capacitor during normal operations. When there is an interruption of power supply the capacitor discharges the energy stored with it. Until the energy is discharged the load will be supplied by the buffer module. The condition of charge within the capacitor and the discharge current determines the back-up time.