The OMRON 61F-11NH is a compact floatless level switch relay unit designed for high sensitivity applications in industrial automation. This specialty controller from the 61F-G[]N series operates efficiently with a supply voltage range of 100-200V AC, making it ideal for automatic water supply and drainage systems. Its lightweight construction and reduced standby power consumption enhance performance while ensuring reliability in demanding environments. Perfect for applications requiring precise liquid level control, the 61F-11NH offers a robust solution for maintaining optimal operational efficiency.