I've had a parade of other (bigger name brand) units where un-reliable operation and false alarms where a never ending nagging problem

We live at the dead end of a private road and were having issues with people parking on our circle at the dead end (we have a heroin problem in our county, so we want nobody down our private road)

I have two transmitters (sensors) one on each end of my house in Baja CA on the dead end dirt road.