The Thermotech 302-EPM-135 is indeed a promising upgrade from the CR-135-EWT. While both models serve similar purposes, the 302-EPM-135 offers several advancements that might make the switch worthwhile. Firstly, it boasts enhanced sensitivity levels, ensuring quicker and more accurate detection of potential fire hazards. Additionally, its updated technology provides better immunity to false alarms, reducing unnecessary disruptions. Moreover, the 302-EPM-135 offers improved connectivity options, facilitating seamless integration into modern fire alarm systems. Overall, if you’re looking to enhance the reliability and efficiency of your fire detection system, upgrading to the Thermotech 302-EPM-135 would be a prudent decision.