Fire sprinklers are used in the fire sprinkler system. In case of fire, water will be sprinkled through the sprinkler splash plate to extinguish the fire. They are divided into pendent sprinkler, upright sprinkler, ordinary sprinkler, side wall sprinkler, etc.

According to the definition in gb5135.1.3.1, the sprinkler is a kind of sprinkler that starts automatically within the predetermined temperature range under the action of heat, or is started by the control equipment according to the fire signal and sprinkles water according to the designed sprinkler shape and flow.