The Omron H7ET-NV-B Counter is a dependable time counter tailored for DC voltage input systems, offering measurement ranges up to 999999.9 hours or 3999 days 23.9 hours. Its high-visibility 7-digit LCD with bold black characters allows easy monitoring. Supporting voltage inputs from 4.5 to 30 VDC, it ensures compatibility with a wide range of control signals. With a 20 ms reset response, IP66 front sealing, and strong resistance to noise, shock, and vibration, it suits demanding industrial environments. Manufactured by Omron and available under Omron Counter solutions, this model belongs to the Omron H7ET Series.