TSC (Tank Switch Controller) is the device that enables the switching of submersible pumps of tanks with manifolds, thereby sensing which tank is active and transmitting this information to the automation system as digital data. In tank-based stock management, during the monitoring of the manifold tanks separately, it determines which tank is active by monitoring the positions of the submersible pump switches. In this way, the automation system processes all the inputs and outputs on the active tank, and realizes an accurate stock management process. There are 2 different models: wired and wireless.