The prime purpose of this article is to humidity sensor. A humidity sensor is a gadget that measures the proportional humidity in a convinced area. While it is complex, it is furthermore significant to our every day life. We will talk about how it works, and how our every day life is exaggerated by it. Also, we will be telling the details of dissimilar prototypes. Associated with humidity is water, and sensors are typically electronic, so we identify that much. There are two types, an analog and digital sensor. For a automatic one, three apparatus are essential. First, the peripheral is completed out plastic.