|
"Driveway sensors"
There's a ton of driveway sensors out there from cheap motion detectors to varying photo beams all the way to buried wire loops. Wire loops being the least false prone, and the hardest to deal with. You see them a lot in gated security areas. Like anything else, you usually get what you pay for. They can be handy to know is someone is pullin into your driveway though.
|