The System 824 Sound Level Meter from Larsen Davis is a great instrument to verify compliance with European standards sound level requirements for entry into the European Markets. I have used this instrument to measure sound levels on various products to establish sound levels to ensure compliance with European Sound Level requirements. The 824 can record sound levels for archiving results for future analysis. If you anticipate purchasing or using this instrument please contact me. This is an instrument that I have enjoyed using and would be glad to be of assistance in setup and usage of this instrument.