The CEL-620 Enhanced digital Sound Level meters can be used for the measurement of all workplace noise parameters to comply with workplace noise legislation, e.g., EU, OSHA and ACGIH. Use the CEL-620 Series to carry out occupational noise assessments or machinery noise tests as well as to assist with the selection of hearing protection. Choose a CEL-620 Series model to suit your requirements, either with a Class 1 or Class 2 Microphone for precision, and with or without Octave Band analysis, to aid you in the choice of hearing protection. The CEL-620 is a simple to use meter and data is displayed on a high-resolution color display. Measurement screens are intuitively color coded according to the mode of operation.