Transformateur 100W 110-220V France/USA Watt & Co

Why do we get 220V at house plug (India) not any other value like

Transformateur 110 - 220 volts, 2000 watts, réversible

VCT 4000 Watts Continuous Use 110 Volt - 220V / 240 Brazil

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Briidea 120V AC to 12V AC 120W Low Voltage Transformer for Outdoor Landscape Lighting This 12V AC landscape lighting transformer is compatible with all outdoor low voltage landscape lighting: spotlight, pathway light, garden light, water feature etc. Built-in astronomical timer, the landscape lighting will turn on automatically at sunset and off at sunrise. The transformer can be installed outdoors for ultimate versatility Age.

Low Voltage Transformer, Briidea 120W 120V AC to 12V AC Landscape Lighting Transformer with Built in Astronomical Timer and Dusk-to-Dawn Timer, Ideal

auto step up transformer 110v to

The Nature's Generator Natures Elite is a user friendly unit that stores electrical energy in its internal battery and uses state-of-the-art electronics. Natures elite converts 12-Volt power to 120-Volt everyday household electricity. Nature's generator does not require gas to run and can be used indoors as it does not emit any toxic fumes like standard gas generators.