This will vary depending on your product, but as a general rule, yes, you should turn off the power any time you’re working with wires.
If you receive your product and aren’t satisfied, you may exchange it for a new one within 30 days, less shipping and handling fees.
Yes. You are able to make subsidiary or shared accounts with other users that will allow them limited control over your Fi devices.
Yes, every fi comes with a one-year limited warranty.