Can you set the permissions of the file to read only? That way nothing else can edit it on the fly?
chmod 444 filename
would make it so the owner, group, and everyone else can only read the file. You can change modification of the file again if you have to edit it.
UK/CA symbol and the input voltage probably means they are on that standard. You'll also want to make sure the barrel size is the same too. Like the third image in this listing says. https://www.amazon.com/Chanzon-Switching-Adapter-100-240V-Transformer/dp/B07HNV6SBJ