What is a concealed sprinkler?

A concealed sprinkler is specifically designed to be unobtrusive, integrating into the ceiling or wall structure while remaining effective for fire suppression. The recess sprinkler features a cover plate that blends with the surrounding surface, allowing for a seamless aesthetic. This design is particularly useful in commercial and residential spaces where maintaining a clean and orderly appearance is a priority. Once activated by heat from a fire, the cover plate drops, allowing the sprinkler to operate effectively without compromising the visual design of the environment.

The other options describe characteristics that do not apply to concealed sprinklers. Visible sprinklers do not incorporate the design features that conceal them from view. Outdoor sprinklers are typically exposed to the elements, making it impossible for them to be classified as concealed. Devices that monitor water flow do have a role in sprinkler systems but are not classified as sprinklers themselves. Thus, the designation of a concealed sprinkler accurately reflects its functional and aesthetic purpose within fire suppression systems.