Hello from Colorado! Thanks for reaching out to us.
We've built our unit for US electrical requirements - 120 volts / 60hz. So you would either need to have a converter that transfer the power to 220v, or source your own 220V adapter.
Sure does! You can select Metric in our App Settings.
We utilize over 50,000 stations worldwide so we should have coverage in Dubai as well. If you want to provide an address I could always find out what station we will be utilizing for you.
Solid 18 gauge multi-strand copper wiring is ideal. This typical sprinkler wire and from what you explained probably what you have. Additionally the Iro only works with AC solenoid valves, so if you do end up purchasing I would suggest checking these to be sure that they are AC and not DC. Just in case.
We are not certified outside the US and Canada though so you cannot purchase from our website. Just be aware of that.
If you have any additional questions feel free to let us know.
Thanks again Gustavo.