The 88974164 is a Millenium 3 Smart expandable programmable logic controller designed for industrial automation applications. It features 16 digital inputs (including 6 analog inputs supporting 0-10 V, potentiometer, and NTC sensors), 10 relay outputs (8 × 8 A relays and 2 × 5 A relays), and operates on 24 V DC power supply with operating limits of -15% / +20% (20.4–28.8 V DC). The unit includes a highly visible blue LCD display with 4 lines of 18 characters and configurable backlighting, operates across a wide temperature range of -20°C to +70°C, and supports the complete library of specific function blocks through the M3 Soft programming software. It is open to XN network communication extensions and digital I/O expansion modules, making it ideal for flexible automation solutions requiring both reliability and expandability in industrial control systems.