The 88974023 is a Millenium 3 Smart Compact PLC (CB12 variant) designed for industrial automation and control applications. It features 8 digital inputs with 4 analog input channels supporting 0-10V, potentiometer, and NTC inputs, combined with 4 relay outputs capable of switching 8A at 5-30V DC or 24-250V AC. The unit operates across a wide temperature range of -20°C to +70°C and includes built-in protections against short-circuits, overvoltages, and power supply inversions. Compatible with all Millenium 3 function blocks and software, it can be mounted on standard DIN rail (35×7.5mm or 35×15mm) or directly on panels. This configuration is ideal for compact control systems requiring reliable relay switching without an integrated display, offering flexibility through optional expansion modules for communication (Modbus, Ethernet) and additional digital or analog I/O.