The Simplex 4098-9792 is indeed an upgraded version of the 4098-9784, offering several improvements in performance and features. Firstly, it incorporates advanced sensing technology, enhancing its ability to detect fires accurately and swiftly. Additionally, it boasts improved reliability and durability, ensuring prolonged effectiveness in fire detection. The 4098-9792 also integrates seamlessly with modern fire alarm systems, providing enhanced compatibility and ease of integration. Overall, considering the enhanced capabilities and reliability, upgrading to the Simplex 4098-9792 is definitely worth considering for improved fire detection and safety.