For uninterruptible power supply with 24 VDC, we offer a new and integrated solution, with perfectly matching hardware and software. The new UPSI-2403 communicates via USB interface with the intuitively management software "UPSI Control Center":In addition to continuous battery monitoring an intelligent lifetime monitoring ensures a very high availability. Charge and discharge cycles, temperature curves and numerous battery parameters are set in a relationship to one another by a complex algorithm. The expected lifetime of the internal battery can be queried at any time via software panel, so service and maintenance can be planned in time. The high functionality of the supplied UPS management software includes the condition monitoring and visualization of all UPSI-2403 operating data and also the setting of detailed operating parameters (see users manual). The µC controlled DC UPS can be supplied with input voltages from 22.5 to 28 V (nominal 24 V). The temperature-controlled and gentle charging of the internal lead-gel-battery (maintenance-free) ensures optimal battery lifetime.