What is a float switch?

A float switch is a device that helps control the level of liquid in a tank or other container. It consists of a buoyant object, usually a ball or cylinder, that rises and falls with changes in liquid level. The buoyant object is attached to a switch mechanism that signals a pump or other device to turn on or off when the liquid reaches a pre-determined level. This type of switch is commonly used in sump pumps, sewage treatment systems, and other applications where liquid level control is important. Float switches are available in a variety of sizes and shapes to accommodate different types of containers and liquids. They are typically made from materials such as plastic, brass, or stainless steel, depending on the application and environment.