The CPS425SL Standby UPS system is perfect power protection for individuals running a stand-alone PC in their home or office. It includes PowerPanel® power management software that monitors the vitals of the CyberPower battery backup system and will safely shut down your system in case of a power outage. Composite integrated circuitry (IC) offers advanced lightning protection and also guards against surges, spikes, sags, brownouts and other power abnormalities. This rugged unit is equipped with a RJ11 port that protects against surges from phone or network disruptions. The unit is also perfect for protecting other electronics, such as: monitors, printers, scanners, speakers, fax machines, CD/DVD players, and iPods. * EMI/RFI - Provides shielding against electromagnetic interference & radio frequency signals. Most commonly, this is used to prevent line noise or ¿humming¿ that occurs over telephone lines or stereo electronics. * Transformer-spaced Outlets - Widely spaced outlets allow you to conveniently add large transformer-based plugs without compromising the utility of other outlets. * PowerPanel® Power Management Software ¿ In the event of a power outage, PowerPanel will safely save and close your open files and shut your computer down in an orderly, intelligent manner. It also features adjustable battery run times, popup warning messages, event logging, and scheduled shutdowns. * LED Indicators - LED status lights indicate Power-On and wiring faults. * Audible Alarms - Audible tones identify when the unit is running off of battery power, unit overloads and low battery. * Resettable Circuit Breaker - Convenient unit reset switch in case of an overload. * 3-year Warranty - CyberPower will replace damaged units if within 3 years of purchase date. We stand behind our products and guarantee quality. CyberPower also offers a #1 rated technical support team that will assist you with product, installation, or warranty concerns --- Free of Charge!