Ignored warnings, but learned a lesson

I just want to share an important lesson learned about the WirelessAlert (TextAlert) system:
As a community, we have installed WirelessAlert sensors along the public paths in the green belts and mountains around our suburb. Being a member of Neighbourhood Watch, I am a recipient of certain Sms messages generated by the community’s WirelessAlert installation when sensors adjacent to my property or intruder movement along the path toward my property are detected. (This unique ability to notify me only of intruders coming toward my property – while not bothering me when prowlers are moving away from my property; but notifying others who live in that direction, is absolutely fantastic).
Last Saturday night was extremely cold and windy. Though I rarely get warnings triggered by the system, sms warnings started go come through – first indicating someone moving along a public path toward my location, and then indicating movement at a particular position adjacent to my property fence. I guess it was sheer laziness while warm and comfortable in front of TV, but I convinced myself that since the same zone was repeatedly triggering, this must be due to the heavy foliage in the area doing what it has never done before – causing a false trigger. I have an electric fence and beams on the inside of the fence, so I felt secure but I was sure in for a rude shock.
After receiving no less than 4 Sms warnings from the fence boundary, I was about to turn that zone off with an Sms to the system (a very nice feature), when no more warnings came through – so I assumed the problem was resolved.
About 6 minutes later I heard a loud scream from my wife and ran to the bedroom from which she was fleeing. She had just seen three men trying to lift out the sliding door. We hit the panic buttons and armed response arrived a few minutes later. Investigations on our boundary shocked me. We found that lengths of garden hose pipe had been slit in their length and used to insulate our electric fence, making it as ineffective as any regular fence – and somehow these guys had got right past our active beams – I know they were active because I checked after the incident, and we checked them with the armed response guys present. I have always believed that beams are infallible and the suppliers convinced me that nobody can get around them, but that is clearly not the case.
In the moments after we pushed the panic button and raised the alarm, Sms warnings again came in and went to others from the TextAlert sensors on the public paths as these guys fled the area, so police were able to pick up on their direction of flight. I must say that this has been a huge lesson learned. I won’t ignore the Sms warnings ever again, I won’t trust that my electric fence makes me a fortress, and I won’t rely on my beams as I used to. I am also going to put in one of these VoiceAlert units into my garden that you guys have on your website.
I guess I can only finish up by saying ‘Thank You’