Instruct: Classify a given review as either positive or negative.
Query: This is a 220V only UPS - WILL NOT WORK ON 110V

This is a 220V only UPS. It will not work on a 110V circuit. This is not mentioned anywhere in the Amazon description. The front of the included manual mentions 110V/220V/240V but the back of the device only shows 220V as the input and output voltages. All I can manage is a little beep noise when pressing the power button on the front.