The Simplex 4100-1284 offers several improvements over its predecessor, the 4100-1254. Firstly, it features enhanced processing power, allowing for quicker response times and more efficient management of alarms and notifications. Additionally, the 1284 model boasts expanded connectivity options, including support for newer communication protocols and integration with advanced monitoring systems. This means improved compatibility with modern network infrastructures and enhanced flexibility in system configuration. Overall, upgrading to the 4100-1284 can provide you with a more robust and future-proof fire alarm solution tailored to meet the evolving needs of your facility.