I see various options out there for vehicle detection and I am interested in a hardwire probe. Looks like Cartell and EMX are the two most prevalent options. My driveway is 500-600ft so I expect that I will need a 500ft probe. What I am not sure of when looking at the Cartell models is there are 2 options, 1 that comes with a controller and 1 that is completely self contained. Not sure which one I should pick to tie into the Omni pro panel? I think I can get by with 1 probe in PVC under the cement at a 45 degree angle. When looking at the EMX option, I cant seem to find 500ft model and really dont want to splice out the gate. The driveway is currently not paved so I have some time to get it right. Let me know if there is something else out there I should be considering. Really do no want to do wireless.