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Products > Noise Signs > NoiseSign > Quiet Zone

NoiseSign - Noise Activated Sign for Quiet Zones

Noise Activated Warning Sign
Noise Activated Warning Sign
Noise Activated Warning Sign Optional Beacons Optional Remote Displays

Features

  • Lights up when sound levels are too high
  • Variable trigger level from 40 to 114 dB(A)
  • Low energy, high output LED technology
  • Adjustable brightness
  • Remote flashing beacon option

Applications

  • Hospital and Neonatal Wards
  • Schools
  • Libraries
  • Study Rooms

Ordering

NS-QZON £345.00
Noise Warning Sign
SHHH Quiet Zone
NSR-QZON £313.00
Remote Display for NoiseSign - SHHH Quiet Zone
NSB-RED £73.00
Red beacon for NoiseSign with 10 m cable
NSB-BLUE £73.00
Blue beacon for NoiseSign with 10 m cable
NS-EX2 £245.00
2 m (6 ft) Mic. Extension with Preamp and Class 2 Mic. for NoiseSign
NS-EX5 £259.00
5 m (16 ft) Mic. Extension with Preamp and Class 2 Mic. for NoiseSign
NS-EX10 £284.00
10 m (32 ft) Mic. Extension with Preamp and Class 2 Mic. for NoiseSign
NS-EX15 £318.00
15 m (49 ft) Mic. Extension with Preamp and Class 2 Mic. for NoiseSign
NS-QZON Noise Warning Sign
SHHH Quiet Zone
£345.00
+VAT

NoiseSign Overview

The NoiseSign is a wall-mounted sign that lights up when the noise levels are too high. It can be used to remind staff and visitors in hospitals, libraries and studying areas to keep their noise levels down.

The level at which the sign lights up can be set using controls on the back of the unit to anywhere between 40 and 114 dB(A) in 1 dB steps. It can be set to switch off immediately when the level falls, or to remain lit for 30 seconds. A small plate can be fitted over the controls to avoid tampering.

The Noise Sign is easily mounted to the wall using two screws, making it suitable for use on brick, wooden or plaster surfaces. It is lightweight so there is very little strain on the mountings.

Range and Applications

Due to its very wide range of operation, 40 to 114 dB(A), the NoiseSign is suitable for most applications. In a hospital, school, or other quiet environment, it would usually be set somewhere in the region of 45 to 60 dB(A) as a reminder to people to keep the noise levels down.

Display Settings

For use in differing environments the brightness of the NoiseSign can be adjusted. In a bright area it would be set to its brightest, but for use in a hospital it might be set to a less intrusive level.

For environments where the sign might not be easily seen, up to three remote LED beacons can be attached. These beacons can be set to flash to make it clear that the noise levels are too high.

Noise Beacon

The NSB-RED and NSB-BLUE are low power, high visibility LED beacons that connect to the NoiseSign to give a clear warning of high noise levels. They light up at the same time the NoiseSign lights up.

  • Low power, high visibility red or blue beacon
  • Up to three beacons on one NoiseSign
  • Weatherproof to IP65
  • Includes 10 m (32 ft) of cable
  • No additional power needed

Ordering Information

The noise beacon does not work on its own, it must be connected to the NS-QZON NoiseSign. You can connect one, two or three beacons to each noise warning sign.

The order code for the noise beacon is NSB-RED or NSB-BLUE, and this includes a 10 m (32 ft) cable to connect back to the NoiseSign or to daisy-chain to another beacon. The beacons get their power from the NoiseSign, so no extra power supply or power outlet is needed.

NOISY ENVIRONMENTS

  • Level adjusts to a very high 114 dB(A)
  • Bright LED display for industrial environments
  • Standard hearing protection symbol

Noise at Work - Factory, Industrial

After completing a noise survey and working to reduce the noise at source, many industrial environments suffer with intermittently high noise levels. In such environments it may be unreasonable to ask staff to wear hearing protection at all times, so noise activated warning signs can be used to inform them when the levels are high.

One or more NoiseSigns can be mounted at strategic points, set to light up when the surrounding noise levels exceed 80 dB(A) for example.

Outdoor Noise Warning

The NoiseSign can be connected to an outdoor microphone system. The microphone is installed outside, connected to the sign that is mounted inside.

With this configuration staff can be warned of high sound levels outside (steam valves for example) that may cause complaints from local residents.

Entertainment - Pubs & Clubs

Music in pubs, clubs, discos and hotels tends to be of a certain volume to encourage the right atmosphere. However, some DJs and live groups can go a bit far, especially as the evening wears on and their hearing becomes dull, resulting in complaints from local residents.

The NoiseSign is the ideal way to keep the volume to a level agreed with the local residents or environmental health officer.

QUIET ENVIRONMENTS

  • Level adjusts down to a very quiet 40 dB(A)
  • Brightness can be reduced for sensitive areas
  • Attractive wall-mounted design

Hospital Noise

Noise in hospitals causes patient discomfort and can increase the recovery time. Much of the noise can be avoided if visitors and even staff are reminded of the issue. Noise activated signs mounted in the corridors or rooms are an excellent reminder.

The brightness level of the sign can be reduced for use in low-light areas where a bright sign would disturb.

Schools

Mounted in classrooms, communal areas and especially in cafeterias, the NoiseSign gives a very clear indication that the sound levels are too high.

In the classroom this makes for a much better learning environment. Elsewhere, it just makes it a more pleasant place to be for the majority who do not want too much noise.

Library Noise

Libraries are usually quiet places, but when people start chatting the noise levels can easily increase. It can be embarrassing to "Shhh" somebody at such times, so a sign that does it automatically is ideal.

The NoiseSign can be set to a very low level, lighting up when too much noise has been made, rather then when somebody else's perception suggests that it is too loud.

Noise Sign for Hospital Noise

The NoiseSign, with the text SHHH! - Quiet Zone is the perfect reminder for staff and visitors that they should keep their noise levels down.

  • Level adjusts down to a quiet 40 dB(A)
  • Brightness can be reduced for sensitive areas
  • Attractive wall-mounted design

Typical locations for noise warning signs:

  • By the nurses station
  • Corridors
  • At the entrance to each ward
  • Within each room

Just the presence of the NoiseSign is often reminder enough!

Why Noise Signs?

Too much noise in a hospital or medical center causes patient discomfort and can result in longer recovery times. The noise in question comes from visitors, staff, patients and from the movement of equipment. Noise Warning Signs take the strain out of reminding people to keep the noise levels down.

Unnecessary noise is the most cruel abuse of care which can be inflicted on either the sick or the well. Florence Nightingale, 1859.

Noise Signs are most popular in NICU and neonatal units, but are valuable on other general and intensive care units to remind not just the visitors but also the staff and patients to keep their noise levels down.

Noise Monitoring at the Nurses Station
Noise Monitoring at the Nurses Station

Locating the NoiseSign

The perfect location for a sign depends on the layout and the acoustics of the area in question. The most important aspect of the NoiseSign is that it reminds people to keep the noise level down, so it is best to mount them where they are clearly visible to anybody entering the room or area. Often the Nurses Station is a good place to position one unit as this is in view to anybody visiting and also to constantly remind the staff.

There is no simple rule about the sound level trigger setting. Hospitals have different ambient noise levels and different acceptable limits. An intensive care unit will have a much lower noise threshold than a busy areas dealing with less critical illnesses. The best way to find the comfortable limit for an area is to set the sign up to 55 dB, run it for a few hours, or even a few days, and get a feel for whether it is being too sensitive for the given environment or whether it is letting people get away with too much. Adjust up or down by a few dB as needed. A level of 45 to 55 dB is common for neonatal and intensive care areas and 50 to 60 dB is common for other areas, although it does depend a lot on the acoustics of the areas in question.

Noise in Neonatal and NICU

  • Remind staff and visitors to keep their noise down
  • Reduce the harmful influence of high noise levels
  • Helps to reduce stress levels in infants
  • Unbiased view of the actual noise level

Most of the noise warning signs that NoiseMeters supplies are for use in neonatal, and intensive care units. Babies in intensive care are particularly sensitive to high noise levels and to the increased stress that they cause.

Noise from visitors and staff is best dealt with using a device such as the NoiseSign as it is not influenced by the complicated human perception of noise. If it is loud, the sign will light up, whoever is making the noise.

Neonatal units, like most hospital environments, tend to be very poor acoustically due hard, reflective surfaces. Beds are often closely spaced, visitors can talk loudly (especially the younger ones) and staff have to work quickly and move equipment about. Add to this the incubators being opened and closed, occasional tapping on the lid and items dropped accidentally and the noise levels soon become unpleasant for the baby. One of the biggest culprits is the alarm, which is clearly essential, but as the background noise levels get higher the alarm has to be louder still. A quieter background allows for quieter alarms.

Immediate Effects of NICU Noise

noise in neonatal unit

The immediate effects of noise in the neonatal unit are reasonably clear. The baby's sleep is easily disturbed and sudden loud noises (bangs on the incubator for example) can have a startling affect on the heart rate and breathing patterns.

High and intermittent noise is also unpleasant and distracting for both staff and parents. Defined "Quiet Times", when noise and light levels are kept down, certainly help and are now used in many units.

Long Term Effects of NICU Noise

The long term effects of noise in the NICU are not so obvious. Hearing impairment as a result of exposure to high noise levels can be expected but research over the last few years has also shown a link with language development. This seems to be related to the fact that a baby that goes full term is only exposed to lower frequency noise (< 250 Hz) during the brain and sensory development stages.

Some such research can be found in the links below.

Noise In Schools

Mounted in classrooms, communal areas and especially in cafeterias, the NoiseSign gives a very clear indication that the sound levels are too high.

In the classroom this makes for a much better learning environment. Elsewhere, it just makes it a more pleasant place to be for the majority who do not want too much noise.

Library Noise

Libraries are usually quiet places, but when people start chatting the noise levels can easily increase. It can be embarrassing to "Shhh" somebody at such times, so a sign that does it automatically is ideal.

The NoiseSign can be set to a very low level, lighting up when too much noise has been made, rather then when somebody else's perception suggests that it is too loud.

Installing the NoiseSign

The NoiseSign is very quick and easy to install:

  • Plug the microphone in
  • Fit to the wall with two screws
  • Plug in the mains power supply

The trigger level is adjustable between 40 and 114 dB(A) in 1 dB steps. The adjustment is made using controls that are usually out of site on the back of the unit.

Mounting on the Wall

wall mounting the noise sign

The sign is fixed to the wall using the two screws and plugs that are included.

A paper template is also included in the box, accurately showing the distance needed between the holes.

Once the screws are in place the sign simply slides into place.

Connections

microphone and power connections
Microphone and Power Connections

microphone extension cable

Microphone Extension

An optional microphone extension cable can be used to allow the microphone to be mounted up to 10 m from the sign.

Noise Sign Options

The standard NoiseSign packages includes the following items:

  • NoiseSign noise warning sign
  • Microphone
  • Power supply (UK, EU, USA)
  • 5 m Power Extension Cable
  • Mounting screws and plugs
  • Instructions
in the box
In the Box

Standard Noise Signs

NS-QZONSHHH! QUIET ZONE
To remind staff and visitors to be quiet. Ideal for hospitals, libraries, schools and offices.

Beacons

NSB-RED orBeacon
NSB-BLUEA low power, high visibility, weatherproof (IP65) beacon that connects to the NoiseSign. It lights up or flashes when the sound levels are too high. Up to three beacons can be connected to one sign.
Each beacon comes with 10 m (32 ft) of cable and simple wiring instructions.

Remote Signs

NSR-QZONThe NoiseSign can be connected to up to three remote display signs. When the NoiseSign lights up, the remote signs light up in the same way and for the same period of time. Each remote unit comes with a 10 m cable to connect back to the master NoiseSign or between remote units.

Microphone Extension Cables

NS-EX2
NS-EX5
NS-EX10
The NoiseSign can be fitted with a remote microphone on a 2 m, 5 m or 10 m extension cable. To use this feature, a Class 2 microphone and preamplifier give the drive needed for the extension cable.

Outdoor Microphone

A range of outdoor microphones is available for use with the NoiseSign. With the sign mounted indoors and connected to a microphone outside, an effective warning of high noise levels caused by industrial processes is provided. This configuration can also be useful for pub and clubs, giving a true warning when the sound levels at the boundary exceed a given limit.

Please contact NoiseMeters Limited for more details and pricing.

NoiseSign Specifications

Dimensions300 mm diameter, 50 mm deep
Trigger Level40 to 114 dB(A) in 1dB steps
Frequency Wgt"A" Weighted to IEC 61672
Time WgtSlow to IEC 61672
DisplayLED with variable brightness
Delay going offNone or 30 seconds
Power12 VDC (adapter included)
OutputControl for remote displays

Red and Blue Beacon Specifications

Power11V, 50mA
(Provided by the NoiseSign - no extra power needed)
EnvironmentalWeatherproof to IP65
CasePolycarbonate
DisplaySelectable flashing or static
Flash Rate1Hz
DimensionsDiameter: 85 mm
Height: 81 mm