The PowerWalker Basic VI 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 multi-functional button (a single click will illuminate the LCD panel, a double click will mute the alarm and a long-press will control the output).