This StrongArmÆ one hundred twenty Volt electrical winch is meant to be used indoors and for mounted applications with access to AC power, including: search cranes, boat lifts, boat davits, to tug disabled vehicles up onto frame-straightening machines, lightweight towers, marine railway systems, greenhouse ventilation systems, to tug tiny aircraft in and out of aircraft hangars, gap and shutting giant horizontal sliding doors, dumb waiters and general material handling applications. 1-year restricted warranty. U.S.A.