The BlueWalker PowerWalker VI 2200 SHL is a standalone tower UPS that prevents total failures, outages, dips, and power surges from the electrical grid from reaching computers or other electronic devices. The UPS also eliminates minor fluctuations in the power supply and isolates connected devices from larger disturbances by disconnecting from the power supply and providing power from its internal batteries until the power supply returns to safe levels. With a power output of 1200 watts and four output sockets, the PowerWalker VFI 3000T LCD is ideal for safeguarding multiple systems, such as in small offices.