Allen-Bradley 1794-IP4 Flex I/O pulse counter module is a high-speed input device from the Rockwell Automation Flex I/O 1794 series, designed to provide precise pulse counting for industrial automation applications. The 1794-IP4 module features four input channels, organized into two groups of two channels each, allowing efficient signal processing and flexible system configuration. It is compatible with multiple terminal bases, including 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TBN, and 1794-TBKD, providing versatile installation options. The module accepts a minimum input pulse width of 2 μs and supports counting frequencies up to 100 kHz, ensuring accurate and reliable pulse measurement for high-speed control systems.