Stellar SI355 Sound Level Meter with Datalogging

The Stellar SI355 is a handheld professional sound level meter designed for accurate noise measurement and data logging. It is suitable for industrial, environmental, workplace safety, HVAC, construction, and general acoustic monitoring applications. With a measuring range of 30 to 130 dB, selectable level ranges, A/C frequency weighting, Fast/Slow time weighting, and built-in datalogging, the SI355 provides reliable sound measurement for professional use. It also features a USB interface and Windows software for easy data transfer and analysis. Features Sound level measuring range: 30 to 130 dB Built-in datalogger with 64,000 records 60 dB dynamic range in each level range Selectable ranges: 30–90 dB, 50–110 dB, 70–130 dB A and C frequency weighting Fast and Slow time weighting Max / Min hold function Real-time clock with calendar USB interface for data download Supplied with Windows software AC/DC auxiliary output 1/2 inch electret condenser microphone Complies with IEC 61672-1 Class 2 standard