Which board do I need?

Thanks for the replies.

First off, I would like to say that I am running everything by an electrician before attempting anything.Just to be safe.

I basically want to run a heating element like you would use in your hot water heater. And depending on the temperature reading I would like to switch the outlet that the element is plugged in to, on and off.

Is there an outlet with a relay built in?

Any other suggestions?

Thanks!