<p>Described herein is a rain intensity sensor. The sensor includes a circuit, which includes a resistor and at least two spaced apart electrically conductive strips electrically connected in series to the resistor. The resistor is located between the conductive strips. The conductive strips are sufficiently spaced apart such that when a raindrop contacts with the conductive strips provides a resistive path therebetween and which is electrically parallel with the resistor.</p>