This Simplex 4005 Fan Control Board 562-866 is a high-quality unit that is perfect for those who are looking for an efficient fire alarm system. Made in the United States, this unit is perfect for businesses and industrial facilities that require reliable fire protection equipment. With its brand name Simplex, you can be sure that you are getting a top-of-the-line product that meets all safety standards.The fan control board is designed to work with fire alarms and is a unit type that comes in a quantity of one. The model is suitable for use with different types of fire alarms. This product is perfect for those who want a reliable fire protection system that does not compromise on quality.