Industrial Noise
When you have industrial processes that are not constant, the result is intermittent noise and a situation where hearing protection is only needed at certain times. The Noise Warning Sign can be used to automatically let people know when they should wear their hearing protectors and when the noise levels are acceptable.
The signs should be mounted on the wall and the level set so that the yellow and red lights indicate high noise levels at the point where people are working - not just the point where the sign is mounted. In large areas a number of signs will be needed to cover the different noise levels that will exist.
Office Noise
Offices can suffer from high noise levels, particularly when staff are using telephones in open plan areas. High noise levels in call centres makes it difficult for staff to work and does not give a good impression to whoever is at the other end of the telephone call. A noise warning sign can be used to remind staff to keep their voices down in consideration of others.
Controlling such office noise can be difficult because of different people’s perception of what is too noisy. A persons hearing is also dulled during the day so something that seems a little loud in the morning can seem better during the afternoon. Using a noise warning sign to indicate when the levels are high takes away this perception problem. | 
