Most plug in electronic devices, electrical outlets, plugs, etc, in North / South America use 110V-120V electricity.
If you're in need of a 220V-240V, we can convert for $149 (External Transformer for International Use) / $199 (Internal). This will be necessary if you're shipping overseas to Europe / Asia / Africa, or if you are using a special outlet in North America, including those used for washers / dryers.