Sensor taps are a technological miracle like place your hand under the spout and water starts flowing, amazing. But their inner workings rely on the different technologies, cleverly adapted to a tap spout. 1. Spout: Touchless tap spouts, which hold all the working parts, are made of zinc in cheaper models, while the high-end models are made of brass. They may be plated with nickel or chrome for durability and appearance. There are different styles of spouts for standard washrooms. The spout also is where aesthetics come into play. The shape and finish of the taps' spouts are major reasons buyers choose one touch taps over [...]