Description: Unique number and letter combination assigned by the manufacturer to identify the device for the order; Name: Manufacturer order code
Description: by manufactures issued unique combination of numbers and letters used to identify the device for ordering; Name: order code of manufacturer
Description: Determined ten times the logarithm to the base 10 of the ratio of the sound energy, j, to a reference value, j0, expressed in decibels; Name: Sound energy level