Isn't this what it is made to do? We got such sensors here too, and they all do exactly what you hacked yours to do.
Well - technically, yes; but usually, they are wired in between an outlet box and another light (or lights) on the outside of the house, via romex or other structured electrical wiring...
While this presentation isn't so much a "hack", it does show how to use such a device to switch a plug, into which a standard lamp or other device (like a fan, maybe?) can be plugged into it. This is not how you typically see them used - usually, they are direct wired to the device (like a set of flood lights or such) they are controlling...
