ST-21D

The ST-21D sound level meters are fully compliant with the latest IEC 61672:2013 Class 2 standard. Advanced integration algorithms designed to withstand industrial conditions.

They equate continuous sound level with sound exposure after selecting a time interval, an ideal tool for professional noise measurements, such as those required by occupational noise control regulations or OSHA occupational noise standards. At the forefront, they ensure employee hearing protection and workplace safety.

Suitable for both real-time noise measurement and noise exposure logging over time. Condenser microphone for high accuracy and long-term stability. Integrated memory for sound recording and measurement results (including start/stop time, %Dose, TWA). Low power consumption and charging via USB port allow for extended use.