EM4124 vs Monza 4 Series

Choose EM4124 if you need a cost-optimized UHF RFID solution for basic item-level tagging with minimal data requirements. The chip provides 176 bits of non-volatile memory including a 96-bit EPC code and 32-bit user memory (which appears as part of the access/kill password structure), plus a 64-bit factory-locked TID. It supports EPC Class-1 Generation-2 and ISO 18000-6C protocols operating in the 860–960 MHz band. Security includes 32-bit password protection for both Kill and Access commands, plus an optional Deactivate function for applications requiring permanent muting. The EM4124 is suitable for straightforward supply chain tracking, inventory management, and retail applications where the standard 96-bit EPC identifier is sufficient and extended user memory is not required. Choose Monza 4 Series if you require enhanced memory capacity, advanced Gen2v2 features, and improved read performance for demanding logistics or retail environments. The Monza 4 provides 128-bit EPC memory (33% more than EM4124's 96 bits), 512-bit user memory (versus EM4124's 32 bits), and a 64-bit TID, enabling storage of additional product information, batch data, or authentication codes directly on the tag. It supports EPC Class 1 Gen 2 Version 2 (ISO 18000-63), offering backward compatibility plus proprietary features like FastID for rapid singulation, TagFocus for direction-sensitive reading, and BlastWrite for faster programming. The AutoTune and Self-Adjust capabilities optimize antenna matching across varying conditions. Security includes standard 32-bit access and kill passwords. Select Monza 4 for applications requiring extended data storage, faster inventory cycles, or enhanced read reliability in dense tag environments.