SST (Soft Start Technology) gradually, safely ramping up the output voltage to start difficult motorized loads and protect sensitive appliance circuits. They handle temporary high-surge loads without problems. They run most AC-powered electronic equipment and appliances including wet / dry vacs, stereos, heavy-duty power tools, TV / DVD / VCR combos, microwaves, refrigerators, computers and more (see chart for wattage examples). Powerfully convenient: Completely silent operation; Smooth, noise-free power technology with filtered modified sine wave, helps eliminate static and horizontal lines in TV picture; Engineered for safety, durability, reliability. Has short circuit protection, low battery voltage alarm and shutdown, thermal shutdown, and auto reset....  (less)