My dad has the Mier Products Inc Model DA-600.

He likes it and says it doesn't trigger for deer and dogs. Plus it will turn lights on when hooked into a power outlet with a light plugged into it through a wireless connect. There are lots of options out there...

Just type in driveway alarms into a search engine and I am sure multiple options will come up. If I ever end up in a secluded residence with a long driveway, I'll get one myself...