The OMRON K3HB-PNB-CPAC21-AC100-240 is a high-performance digital pulse meter designed for precise measurement applications. This versatile device supports high-speed pulse measurements up to 50 kHz, making it ideal for monitoring rotary encoders or ON/OFF pulse signals in industrial settings. Equipped with NPN input and voltage pulse input, it features a 5-digit display and offers relay outputs for various operational states. The K3HB-PNB-CPAC21 is perfect for applications requiring accurate time interval and pulse measurement, ensuring reliable performance in demanding environments.