<B>Waterproof Ultrasonic Distance Measuring Module Review</b><P>http://tinyurl.com/owu78gh <P><P> Waterproof Ultrasonic Distance Measuring Module <P>This ultrasonic sensor is a non-contact distance measurement module<P>Electronic brick compatible interface and breadboard friendly<P>Waterproof, four-pin on board (GND, OUT, IN and VCC)<P>Designed for easy modular project usage with industrial performance<P>
