A moisture detection system includes a moisture detector having a first
electrical conductor, a first substrate having the first electrical
conductor disposed on one surface thereof, a spacing layer coupled to the
other surface of the first substrate, a second substrate having one
surface thereof coupled to a surface of the spacing layer opposite the
first substrate, and an electrically conductive layer disposed on a
surface of a substrate opposite the spacing layer. A second electrical
conductor can be disposed on the same surface of the first substrate as
the first electrical conductor. The first and second electrical
conductors can define interdigitated fingers. Circuitry is provided for
stimulating the first electrical conductor with a predetermined frequency
oscillator signal and for outputting a control signal that is responsive
to the response of the first electrical conductor to the oscillator
signal and an amount of moisture adjacent the first electrical conductor.