Driveway chime?

[Innovate1]

Here's the magnetic field one I used. Put a 2" PVC pipe under the driveway so I could replace it if needed. I had it beside the driveway before and it missed some small, slow vehicles. Only problem I have had with it is "backhoe fade" when someone hit the cable with a trencher after I marked exactly where it was.

https://www.mightymule.com/gate-opener-accessories/fm141/

It only provides a relay contact closure so it goes into some other automation stuff but it could just buzz a buzzer. They come in several cable lengths.

 

[BruceMc]

Final Update: My Dakota Alarms kit, using motion sensors, has been taken down, the batteries removed, everything carefully repacked, and the box stomped on and thrown in the goddam trash. Utterly ******* worthless hunk of ****.

It has totally ignored every single vehicle that has come through in the past three months- I can't remember the last time it actually detected one. Car, truck, box van, UPS truck, septic pumper, the dude checking gas meters... Not one goddam peep.

My Guardline is still working fine, going into it's 4th Fairbanks winter. Vehicles, moose, foxes, lynx, stray dogs, and the neighbor walking over for a visit.

Amazon.com

I bought a 2nd receiver - one for the garage and one for the house. Two sensors, two receivers.