The Omron H7ER-NV-B Counter is designed for rotational speed measurement requiring selectable 1 kHz or 10 kHz input capability. Its 4-digit LCD with 8.6 mm characters ensures excellent visibility, while the voltage-input method supports 4.5–30 VDC PNP/NPN encoder signals. Built for industrial strength, it offers high resistance to ESD, noise, vibration, and mechanical shock. With an IP66-rated front, it operates reliably in tough conditions. Manufactured by Omron and listed under Omron Counter products, this tachometer model belongs to the Omron H7ER Series.