The wire is many miles long. You'd probably need some decent voltage to even be able to produce any kind of current in it.
Even then, if the eruv was broken, the sensor would only inform you that it is broken, but not where on the entire island the fault is.
(unless of course you monitor each segment of the wire separately, e.g. using capacitance sensing, with internet-connected controllers that send an alert when the capacitance of their segment changes. That would be the practical but boring solution)
Even then, if the eruv was broken, the sensor would only inform you that it is broken, but not where on the entire island the fault is.
(unless of course you monitor each segment of the wire separately, e.g. using capacitance sensing, with internet-connected controllers that send an alert when the capacitance of their segment changes. That would be the practical but boring solution)