What is the best motion detection device to detect cars pulling into my driveway?

swiggins-ga:

'best' is a very subjective term, so it would be helpful if you could
describe your exact need and application in greater detail, or
rephrase your question if you have a specific type of motion detector
in mind already.

For example, if your specific need is to know when a vehicle enters
your driveway, the appropriate solution may be an 'electronic eye
beam' as opposed to a motion detector. It all depends on the
application, and the location.

Please describe your requirement in greater detail, and I or another
Google Answers Researcher should be able to point you towards the
right solution.

Regards,

aht-ga

You can do this really inexpensively with parts from any hardware
store. One only needs a motion senor flood light (I used the one with
two lights) put an outlet screw in in one side instead of a light bulb
the one can plug in an extension cord this then powers up any time
someone comes into your driveway you plug something into the cord an
old clock radio works for me cause I can set it to buzz or play music
and hit the snooze button to shut it off.