With up to 6 hours uptime, the Mecer 3000VA UPS is the ideal solution in providing you with the capability to still keep working when that power outage hits. It provides emergency power backup to various devices such as routers, modems, decoders, VOIP phone systems, surveillance system, alarm system and many more. Get this reliable and convenient UPS which also provides built-in protection against power overloads, discharge and overcharging of the device.