Here in UK we would use something like this; which is adjustable.

http://www.screwfix.com/app/sfd/sea/...d+light+switch

Perhaps something similar in US.

On 1 Jan, 02:20, wrote:
I had a porch light that I bought probably 10 years ago and it finally
went out. It worked great in that it would go out after a delay even
after the light switch was turned off. It was not light sensitive. Kind
of like a garage door light operates. Any idea where I could get
another one like that? I cannot make out what it says on the bulb
anymore either.

Frank