The Carlo Gavazzi S 1221 166 230 is a versatile and reliable conductive level controller designed for monitoring and controlling the levels of conductive liquids. It is ideal for a wide range of applications, including filling or emptying tanks, wells, and reservoirs. This controller features adjustable sensitivity, allowing for precise detection across various liquid conductivities. Housed in a standard 11-pin plug-in module, it ensures easy installation and replacement. The selectable filling or emptying function, combined with an adjustable time delay, provides operational flexibility and prevents rapid cycling of pumps or valves, making it a robust solution for industrial automation and water management systems.