The PowerWalker basic VI 600/800/1000/1200/1500/2200 STL series is designed to answer the essential market needs. This line interactive UPS will protect your load from power failures and voltage disturbances, while remaining affordable and compact. It is equipped with a USB port with HID support allowing easy and immediate communication with any O/S.Additionally this series offers an advanced auto-dimming LCD panel with a smart multifunctional button (a single click will illuminate the LCD panel, a double click will mute the alarm and a long-press will control the output).The managing software PowerWalker PowerMaster is available for download from our website.- Human Interface Device (HID) compatible USB connection (no additional drivers needed)- Multi-purpose button (single-click, double-click or hold to control different functions)- Auto dimming screen (UPS is woken up with single button click)- Equipped with Boost and Buck AVR to stabilize output voltage- Reduced environmental impact: no CD, no USB cable in the box- Available with outlets type E, F and G