As the name suggests a tank level controller is a device that is configured to monitor the water level inside a tank which is being filled, then stop the operation as soon as the fluid level reaches the brim of the tank. Thus basically the systems helps to prevent overflowing of the fluid once the tank is full. The fluid here is fundamentally water and the control operation is implemented by monitoring the level of water inside the tank. The circuit designs laid down under this category are easy to build and can be thoroughly used for the mentioned purposes in homes, apartments, bungalows, and even industries. Whether its is your home overhead tank or underground tank using submersible sumps, all can be controlled efficiently through the concepts explained in this category.