The Square D Pumptrol 9013 FSG-3 B Water Pump Pressure Switch is a heavy-duty pressure switch designed for controlling water pumps with an operating pressure range of 20-40 PSI. Made with ABS/plastic, aluminized steel, and metal materials, this gray switch features a stainless steel finish and screw termination type for durability and easy installation. With a bolt-on mounting style and IP54 rating, this switch is suitable for use in various rooms and applications, making it a versatile option for pump control in both interior and exterior settings.