I don't have the wireless, I have a hard wired driveway alert, Vehicle Alert by Winland Electronics and it's a very reliable system. It uses a buried probe next to the driveway and the direct buried 3 conductor wire runs back to the control panel. A separate 12vdc P/S is all the hardware to it. A person won't set it off, but a person on a bicycle or a person carrying a shovel will as it detects metal passng through its flux lines.
The control unit, which can be surface mounted anywhere, has a very loud adjustable squeal. The duration and sensativity is adjustable. I can hear the squeal down in the basement from the control unit mounted upstairs in the hall. I've had it approx 15 yrs and have had to replace the P/S after a lightning hit this past spring.
re. X10. I also use X10 to turn my lights on/off. I tried the Eagle-eye but the batteries have to be changed quite frequently. I use an older CM11A to control the lights. It has a serial computer interface that allows for programming but a connection to the PC isn't necessary for basic on/off operation but is needed to run various scipt or Macro events.
It has built in daylight savings time adjustment and uses an algorithim to to turn the lights on based on DST settings.
It's also great for Christmas light control. The basic light units require incandesant lamps but since everything is going to those new mini floresent lamps the ampliance modules are used to turn them on/off. One thing thats nice about the incandescent lamps is that the lamps can be dimmed which extends the life fo the bulbs 2 or 3 fold.
That same lightning strike took out my controller and it's surprising how the Mrs wanted me to get everything back repaired * operational as shes grown very used to the automation and early warning
My driveway is only 100' but these probes are rated for pto 2500'. It also has an optional relay switch for activating lights etc when the sensor goes off but the squeal from the control panel is enough for us.
I prefer hardwired but thats just me.
Good luck
