Don't use any. It's insanely insecure (free DDoS for everyone! not to mention strangers on Internet controlling your house) and a bit of a waste of money. Think

Don't use any. It's insanely insecure (free DDoS for everyone! not to mention strangers on Internet controlling your house) and a bit of a waste of money. Think of all the exercise you get walking to the light switch and back ;)