
Test Noise Decibel Microphone Digital Sound Level Meter Datalogger with Free Software. IEC 61672 Class 2 Accuracy: Complies with IEC 61672-1: 2003 Class 2 and ANSI S1.4 TYPE 2 standards for precise measurement. Integrated Data Logger: Stores up to 32,000 data points with USB interface and free software for easy analysis. Dual Frequency Weighting: Supports user-selectable A & C frequency weighting and Fast/Slow response times. Factory Calibrated: Each meter is fully tested and calibrated in the factory before delivery for reliability. 2-Year Warranty: Provides a comprehensive 2-year warranty covering mechanical defects and support. Versatile Power Options: Operates on one 9V battery or external DC 9V power supply for flexible usage. Multi-Function Design: Combines Sound Level Meter and Data Logger functions in a compact, portable device.