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The QFM category includes a wide range of duct sensors and hygrostats designed for measuring humidity levels in various applications. With products such as the Siemens QFM2100, QFM3160D, and QFM4171, this category offers high-quality solutions for monitoring and controlling humidity levels in ventilation systems. The Siemens QFM sensors are known for their accuracy and reliability, making them a popular choice among HVAC professionals and building managers.

Whether you need a sensor for a small duct or a larger ventilation system, the QFM category has a variety of options to suit your specific needs. From basic sensors like the Siemens QFM2101 to more advanced models like the QFM81.2 hygrostat, you can find the perfect product for your application. With Siemens' reputation for quality and innovation, you can trust that the QFM sensors will provide accurate and consistent readings for optimal performance. Upgrade your humidity control system with the Siemens QFM category products for efficient and reliable monitoring.