The VI 2200 UPS Line-Interactive 2200VA 1200W with 4 Schuko Sockets from Powerwalker is a Tower UPS. It has 4 Schuko type sockets as well as an input and output for an ethernet cable and a telephone cable, protecting devices connected to it such as a router or telephone (provided their power supply is connected to a UPS or surge protector). Its operation is (VI) Line-Interactive, which continuously adjusts the output voltage through an automatic voltage regulator, protecting against voltage fluctuations and power outages. Its battery can last for 5 minutes at half load or 0 minutes at full load (when devices connected draw half or maximum current that the UPS can provide, respectively). It provides clean sine wave power, suitable for sensitive devices (e.g. medical equipment) and is preferred for devices with power supplies that have active PFC protection (e.g. computers).