PRW21 is a microphone specifically for outdoor noise measurement. It does not have a built-in calibration device, so it needs to be calibrated periodically with a sound calibrator, and is suitable for short-term outdoor noise measurement. PRW21 meets 1P55 protection grade. 60mm diameter windscreen and internal rain cover can fully protect the microphone, making it withstand the test of wind, rain, snow and other bad weather, and prevent dust damage. The single column bird-proof frame can prevent birds from affecting the accuracy of the measurement.
· IP55 protection level and provide sufficient protection against wind, rain, snow, and dust
·Prevent bird habitation;
·The protection kit can be quickly removed to facilitate regular acoustic calibration;
·IEPE constant current source power supply;
