My relay doesn't switch off when it gets hot

hosseinzr:
All of the items controlling by arduino or just the AC device? Asking this as there are lots of other stuffs managed by arduino and prepare a complete drawing is not so easyLol

Always, always, always, make a schematic for your projects.

Oh, and when asking for help, show your wiring.

Not really wise to argue with the people who are trying to help you. :wink: