DwyerOmega HHSL402SD Sound Meter

The DwyerOmega HHSL402SD Sound Meter measures 30–130 dB with real-time SD card logging, LCD display, automatic range selection, and frequency weighting for accurate environmental and industrial noise testing.

The DwyerOmega HHSL402SD handheld sound level meter measures environmental and machinery noise from 30 to 130 dB with high accuracy. It features a 13 mm condenser microphone, large backlit LCD, and real-time data logging to a 2 GB SD card. Users can select frequency weighting (A/C) and time weighting (fast/slow), store results in Excel format, and transfer data via SD card or optional RS232 interface. This handheld sound level meter offers MAX/MIN capture, autoranging, and sampling rates from one second to one hour. Rugged and portable, it’s ideal for workplace noise surveys, machinery testing, and compliance monitoring.