As the world is grippled with scaricity of water, water saving devices can play a crucial role. The most common problem is water overflowing from tank. A good water level controller can solve this problem. There are different king of water level controllers in the market, but the wireless model is most advance model. Wireless systems are very convenient and robust in comparison to wire based models. The major cost involves in laying communication cables which is saved in wireless model. It is very difficult to replace wire or finding a fault in cable if there is communication problem. Wireless models can be configured quickly as per site requirement and easy to maintain as well as low cost. Now days with advancement in technology has make wireless systems very popular.