TSI Quest SoundPro SE [SP-SE-1-1/3-AC3] 1/1 & 1/3 Octave RTA Sound Level Meter (Class 1) w/AC-300 Calibrator. The SoundPro SE / DL series provides advanced sound level monitoring and comprehensive data analysis. Available in Class 1 and Class 2 models, these instruments feature large screen displays that enable real-time frequency analysis, and data storing capabilities that make it easy to post-process and evaluate workplace noise levels. The aerodynamic shape of the SoundPro is specifically designed to minimize disturbance to the sound fields being measured. From industrial and task noise sampling to hearing conservation, the SoundPro SE / DL series provides accuracy, ease-of-use and, if needed, data for professional follow-through. Features such as a menu driven user interface, quick keypad calibration, removable SD memory card and optional QuestSuite™ Professional II software (Call for details) allow users to simply and reliably perform advanced sound analysis.