I'm an engineer- I can tell you that most peices of equipment run off of a voltage discrepency. As for sensor equipment, I'd be surprised if anyone would be able to nail you with that. HOWEVER, if someone with a trained eye were to fly over your scene and you had a reasonable number of plants, you may be up shits creek. I wouldnt be afraid of a small grow in a small province wiht not much LEO, but i would be afraid of some facist fucking US pig/cop in rural alabama with 150 plants. anyways, best of luck hombre.
cheers
mt