You can send an electron programmed with your firmware and ship it to your client in America and get them to power it up. This would give you confidence that the electron (using the suitable version for America) works in the area that the product will be deployed.
As the Electron is connected to the 
, you are able to monitor it remotely using awesome 
features like pub-sub, function, variable etc.
However, there’s really not a need for this since essentially, swapping the electron to a correct version that works with in America before shipping the final product should work. 