The Honeywell SK-PHOTO-W Silent Knight Low-Profile Addressable Fire Detector is a reliable and efficient smoke detector designed for commercial and industrial facilities. With its low-profile design, it is easy to install and ensures discreet operation. The unit is brand new and comes in a single pack, ready to be integrated into a comprehensive fire protection system. Honeywell is a trusted brand known for producing high-quality fire protection equipment, making this smoke detector a dependable choice for maintaining safety in various business and industrial settings.