Siemens offers a comprehensive range of sensors for various applications, including HVAC systems, building automation, and industrial processes. These sensors measure parameters such as air quality, humidity, temperature, and pressure. Additionally, Siemens Xcelerator Marketplace Sellers like Powtechnology, Attune, Aes Corporation, Wittra Networks Ab, and Thinklite provide sensor technologies and solutions. For detailed information, refer to the search results.