There are two main standards, the UL (USA's "Underwriter's Laboratory"), and CE (European Union's "Conformité Européenne").

The CE will let you sell in the US, Canada, Australia, and the EU (I'm not sure about the Middle East though). The CE is harder to get than the UL, since it includes standards of safety and functionality, while the UL only includes standards of safety.

You can find the UL standards here:
http://ulstandards.ul.com/access-standards/

and here are instructions for the CE standards:
https://www.gov.uk/guidance/ce-marking

if you'd like further assistance with what specific standards would work with your product, and/or assistance with US patenting let me know,

all the best,

Lee