F S Series Side-Mounted Float Level Switch is suitable for liquid level control of open or bearing pressure container in industrial process. When the liquid level reaches to high or low limit, relay contact point can be as signal alarm device or the switch in electronic pump circuit. it is used in water treatment, petrochemical, furnace, shipyard etc.It is widely applicable in the condition of high viscosity, high pressure,high temperature because of it is flexible structure, can replace the FSQ series products.