Content from a source, such as the Internet, may be displayed on a window on a television, such as a crawl screen, closed caption area, or picture-in-picture area. The gas sensor includes a hollow housing in which a gas sensing element is disposed, a protective cover installed on an end of the housing, a metallic cover installed on the other end of the housing, and an insulator in which end portions of leads connecting with the gas sensing element are disposed. Monomer is deposited on a template and then partially cured using a UV exposure.