The Simplex 4098-9714 is indeed a notable upgrade from the 4098-9701 model. One significant difference is its improved sensitivity to smoke detection, which enhances early detection capabilities, crucial for fire safety. Additionally, the 9714 model features advanced algorithms for better discrimination between false alarms and genuine threats, reducing unnecessary disruptions. Moreover, it boasts enhanced connectivity options, allowing for easier integration with modern fire alarm networks and remote monitoring systems. Overall, upgrading to the 4098-9714 ensures a more reliable and efficient fire detection solution for your premises.