Features:
1. Suitable for most noise meters and sound level meters.
2. In outdoor scenarios such as measuring environmental noise, traffic noise, and industrial noise, the sponge ball can effectively filter out wind noise, avoiding measurement errors caused by wind interference.
3. The porous structure of the sponge ball can prevent dust and moisture from entering the microphone, protecting it from dust accumulation and moisture damage, and extending the lifespan of the equipment.
4. The sponge ball has a certain elasticity, which can closely adhere to the microphone, ensuring a firm installation and reducing measurement errors caused by loosening.

Precautions:
1. Before use, check whether the foam ball is intact without obvious damage, deformation or dirt.
2. Ensure the foam ball is tightly installed on the microphone to avoid loosening or falling off. Be careful when installing to avoid damaging the microphone.
3. During measurement, try to avoid frequent touching of the foam ball to prevent dirt or grease from your hands adhering to it, which may affect its performance.
4. After use, clean the foam ball in time to remove dust and dirt on its surface. You can gently brush it with a soft brush, but avoid using overly damp cloth or brush to prevent water from seeping into the foam ball. After cleaning, place the foam ball in a well-ventilated and dry place to air dry naturally.
5. Store the clean and dry foam ball properly in the noise meter's packaging box or a dedicated protective case to avoid compression or deformation.
6. The performance of the foam ball will gradually decline after a period of use, so it needs to be replaced regularly.
7. Do not expose the foam ball to high temperatures or let it come into contact with chemicals to prevent deterioration or damage to its material.