NoiseSign Noise Activated Warning Sign
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Applications for the NoiseSign Indicate high noise levels in a wide range of different environments There are many applications where there is a need to clearly indicate where noise levels are exceeding a threshold.
Ideal for use in both noisy and quiet environments. Some of these are where high noise levels occur, such as factories and in the entertainment industries and some are where the noise levels are much lower, schools and hospitals for example, but where there is still a need to show when the noise is getting too high.
For example, the “Hearing Protection Must Be Worn” version can be used to reinforce the need to wear PPE when noise levels reach a set level. A noise survey may have indicated that the levels will exceed 85dB(A) when certain processes occur but this may happen at random intervals throughout the day.
A Remote Display Unit can also be placed outside of the work area to inform anyone entering that PPE must be worn when they enter the noise sensitive area.
The wearing of hearing protection may not required at all times and so the use of the
Noise Sign will inform employees when PPE is required and when it can be removed.
A different application is to use a Sound Sign to trigger at a much lower level, 50dB(A) for example, to ensure that the noise levels in a hospital ward stay within acceptable levels. There is no need to use hearing protection but the use of a clear warning sign can be very effective in controlling and managing noise levels.
Click on the links below and see some example of where the NoiseSign can be used. The NoiseSign is a very versatile unit and you may have an applications that we have not covered.
NoiseSign Applications
Industry & Factories
Schools & Colleges
Hospitals & Healthcare
Music & Entertainment
Libraries
The NoiseSign in Industrial Environments Show when hearing protection must be worn or when high noise levels occur When a noise survey or risk assessment has been made, areas may be found where hearing protection must be worn or where high noise levels will occur during the working day.
It may not be practiable for employees to wear hearing protection constantly, especially where the noise levels are intermittent or vary significantly over the day. The NoiseSign Version 1 can be used to show when hearing protection must be worn in these areas. Where hearing protection is not required but there is still a need to show when the noise levels are high, the NoiseSign Version 2 would be appropriate.
If it is essential for anyone entering these areas to be prepared and already wearing hearing protection, a CR:202 NoiseSign Remote Unit can be connected to the Master unit and positioned outside of the work area, next to an entrance or door for example. This will ensure that anyone entering the room will be aware of the high noise levels and the need to wear appropriate hearing protection.
A CR:203 Data Logger can be added to gather a record of when the noise levels were over the trigger level and to help monitor the effectiveness of hearing protection
The NoiseSign in Hospitals and Healthcare A simple way to help control sound level in quiet areas Noise is often the primary cause of sleep deprivation and distrubance amongst patients and so keeping an eye on noise levels can help in the recovery process as well as help to create a calm and peaceful working environment.
Visitors and staff can be informed when the noise levels are getting above an acceptable level using the NoiseSign. The NoiseSign Version 4 shows an effective and clear message which can be displayed in public areas.
Remote NoiseSign units can be added to extend the coverage to entrance halls, cafeterias and any other locations where people gather and where raised voices or mobile telephones may cause a problem.
NoiseSign for Music & Entertainment The NoiseSign can help to keep your noise levels under control Noise levels in pubs, clubs and other entertainment venues will often be high to create the right atmosphere. However, if you have any noise limits or controls put upon you or if you are looking to protect your employees from noise exposure, then the NoiseSign is the ideal product.
Lightweight and simple to use, the NoiseSign can be used for temporary venues as well as for permanent installation. In music colleges and schools, the NoiseSign can help to educate students as well as staff about the risks of noise exposure.
NoiseSign for Libraries Even quiet environments can be noisy Most of us think of libraries as quiet places, but more and more libraries are using technology to provide additional services to visitors. Cafetierias are often found in libraries along with other activities that may generate noise.
Computer, printers, copiers and other electronic equipment all produce noise and when there are many people moving around, talking or working on computer keyboards the noise levels may start to disturb.
A NoiseSign with the SHHH! Quiet Zone (NoiseSign Version 4) warning can help to keep noise levels under control. This effective unit will light up when noise level go over a set level, which can be set any value down to 40dB(A), and will inform visitors and staff that the noise is becoming too high.
NoiseSign for Schools and Colleges Maintaining a quiet learing environment There have been many studies which show that high noise levels in a learning environment can affect both students and teachers. Any environment where children and students gather is likely to be noisy! Controlling noise levels can help to reduce the risk of hearing damage in young children as well as making the learning environment more pleasant.
Many buildings that are used for education were not designed with noise in mind, with hard walls and floors often creating a noisy environment with only a few students. The NoiseSign can be used to show students when noise levels are getting high and also to inform staff of when problems may occur.
Keep noise levels down during exam timeThe NoiseSign can be used in cafeterias, classrooms and corridors when examinations are in progress to help to maintain a quiet environment. NoiseSign Version 4 (SHHH! Quiet Zone) is ideal for these locations.
Monitoring noise levels in music rooms
Many colleges have music facilities and monitoring the noise levels that both students and staff are exposed to can often be difficult. Music teachers and tutors can often be exposed to high occupational noise levels which can be above legal limits.
If a noise survey indicates areas where high noise levels may occur, a NoiseSign can be installed to give a clear warning and when used with a CR:203 Data Logger, a record of noise levels over a period of time.
Installing the NoiseSign
The NoiseSign is very quick and
simple to install
Installation of a Noise Sign is very simple.
Select the required
trigger level, connect the 12v power supply to the unit and mount the NoiseSign
onto a wall.
When the noise level measured by the microphone reaches
this level, the sign will illuminate and show the warning. The unit can also be
set to keep the warning illuminated for up to 30 seconds after the level has
fallen back below the trigger level.
This removes the sudden on-off
indication that traditional noise warning signs often produce and which can
cause confusion as to when PPE should be worn. The Sound Sign avoids these
problems.
The sound level chosen for the trigger point can be set using
either the simple level selection on the back of the unit or by using a
calibrated Sound Level Meter to provide a reference measurement.
To
install the NoiseSign, follow these simple steps:
1. Open
the box and check the contents
2. Set the trigger
level and display delay
Remove the rear panel to access the trigger level and display delay settings.
When setting the trigger level, remember that this is the level at the
microphone. Adjust the level to take account of any distance between the
microphone and noise source.
For example, if the aim that the NoiseSign
illuminates at 85dB(A) at a nearby operator position, it may be necessary to
measure the noise level at the operator position and at the position of the
NoiseSign and see if there is any difference. This can then be taken into
account when setting the trigger level.
A range of
accessories are available including a low cost Sound Level Meter which can
help in the installation and setting of the trigger levels.
If a remote microphone is to be used, refer to section 5a
below for details. Connecting the microphone extension cable before mounting the
NoiseSign on the wall will make installation simpler.
3. Connect
the microphone and power supply
4. Mount the SoundSign
onto a wall
The NoiseSign can be mounted onto a wall using the supplied wall plus and
screws. The installation guide contains a template to show the distance between
the mounting holes on the back of the NoiseSign unit.

It is possible to mount the NoiseSign using other methods if it is not possible
to use the supplied screws. The NoiseSign is very light and so can be secured
using industial strength Velcro or other similar products.
5. Optional
Installation Steps
a. External
Microphone & Cable
An extension cable can be used with the NoiseSign to allow the microphone to
be positioned remotely. This requires an
optional preamplifier, microphone capsule and extension cable.
Connect the microphone extension cable to the microphone socket on the top of
the NoiseSign. Connect the preamplifier/microphone to the other end of the
extension cable.
b. Data Logger
The CR:203 Data Logger plugs into the socket on the top of the NoiseSign.
This may be covered by a protective rubber cap which must be removed before the
Data Logger is connected.
Before connecting the Data Logger, install the
software onto a PC and connect the data logger to the software. This allows you
to set the start time (up to 24 hours in advance) and to set the logging
interval (1 second, 2 seconds, 10 seconds or 1 minute).

Remote Display can be connected to a Master Unit to replicate the information
across a wider area.
Mounting a Remote Unit is the same as for the Master
Units and the connection between a Remote and Master unit is made using the
supplied 10m cable. Up to 3 Remote Units can be connected to a single Master
Unit.