Noise-activated Warning Signs
SoundSign Noise-activated Warning Sign




The SoundSign from Cirrus Research is an easy-to-install noise-activated warning sign for use in environments where you need to warn your employees that a preset noise level has been reached and/or exceeded.
- Visual alert to employees to wear or remove hearing protection. The sign lights up when a preset noise level is exceeded
- Trigger level from 40dB(A) to 114dB(A)
- Available in several designs and languages
- Also available as a data-logging unit and with other accessories
The SoundSign Noise-activated Warning Sign
Protect your workspace and keep people alert to excessive noise levels
The SoundSign Noise-activated Warning Sign from Cirrus Research is an easy-to-install noise-activated warning sign for use in environments where there is a need to clearly warn or indicate when a preset noise level has been reached and/or exceeded.
This noise-activated warning sign uses LEDs to display a message when the noise level that you select during setup has been breached.
The SoundSign Noise-activated Warning Sign is perfect for environments such as factories and workshops to serve as a visual alert for your employees to wear their hearing protection. It’s also ideal for use in quiet environments, such as schools, hospitals, and libraries, acting as a silent reminder for people to keep the noise levels down.
Multiple designs and languages
- This instrument is available in four distinct designs and multiple languages.
- Hearing Protection Must Be Worn
- Warning High Noise Levels
- Caution High Noise Levels
- Shhh! Quiet Zone
Application
Noise-activated warning sign
Trigger level
40dB(A) to 114dB(A) in 1dB steps
Microphone
MK:112
Frequency weighting
A weighting to IEC 61672-1:2002
Time weighting
Slow to IEC 61672-1:2002
Visual indication
High-intensity white LED with five standard designs
User-selectable brightness levels
Display delay time
None or 30 seconds
External power
2.1mm power jack
12v DC via CU:200 mains power supply
Output connector
Control for remote display units via standard 2.1mm power jack
Up to three remote display units can be powered from a master unit
Dimensions
12″ diameter, 2″ depth
Weight
1.3lbs (0.6kg)
Mounting
2 x keyhole mounting slots
Data logging
CR:203 USB data logger with 32,000 samples of LAS
(Slow A weighted sound level)
User-selectable 1 second (9 hours), 10 seconds (3.7 days)
1 minute (22 days) sampling
SoundSign Custom Noise-activated Warning Sign



The SoundSign Custom Noise-activated Warning Sign from Cirrus Research is an easy-to-install noise-activated warning sign for use in environments where you need to warn your employees that a preset noise level has been reached and/or exceeded.
- Visual alert to employees to wear or remove hearing protection. The sign lights up when a preset noise level is exceeded
- Trigger level from 40dB(A) to 114dB(A)
- Available in several designs and languages
- Also available as a data-logging unit and with other accessories
The SoundSign Custom Noise-activated Warning Sign
Protect your workspace and keep people alert to excessive noise levels
The SoundSign Custom Noise-activated Warning Sign from Cirrus Research is an easy-to-install noise-activated warning sign for use in environments where there is a need to clearly warn or indicate when a preset noise level has been reached and/or exceeded.
This noise-activated warning sign uses LEDs to display your chosen message when the noise level that you select during setup has been breached.
The SoundSign is perfect for environments such as factories and workshops to serve as a visual alert for your employees to wear their hearing protection. It’s also ideal for use in quiet environments, such as schools, hospitals, and libraries, acting as a silent reminder for people to keep the noise levels down.
Record and store data
You can add a USB data logger to the sign to keep a record of noise levels in your workspace. You can programme the data logger to start recording at specific times and at various intervals over a day, a week, or longer. When you’ve finished recording your data, simply plug the USB data logger into your computer to download and view the measurements.
Need to cover a larger area?
No problem. You can connect the SoundSign to multiple Remote units using our unique Master and Remote system to show the same message as the ‘Master’ unit when triggered.
You can also connect the Master units to flashing xenon warning beacons to add extra visibility.
Application
Noise-activated warning sign
Trigger level
40dB(A) to 114dB(A) in 1dB steps
Microphone
MK:112
Frequency weighting
A weighting to IEC 61672-1:2002
Time weighting
Slow to IEC 61672-1:2002
Visual indication
High-intensity white LED with five standard designs
User-selectable brightness levels
Display delay time
None or 30 seconds
External power
2.1mm power jack
12v DC via CU:200 mains power supply
Output connector
Control for remote display units via standard 2.1mm power jack
Up to three remote display units can be powered from a master unit
Dimensions
12″ diameter, 2″ depth
Weight
1.3lbs (0.6kg)
Mounting
2 x keyhole mounting slots
Data logging
CR:203 USB data logger with 32,000 samples of LAS
(Slow A weighted sound level)
User-selectable 1 second (9 hours), 10 seconds (3.7 days)
1 minute (22 days) sampling
SoundSign Remote Display Unit



Extend the range of your SoundSign Noise-activated Warning Signs by connecting remote display units.
- Compatible with SoundSign Master units and other SoundSign Remote Display units
- Uses LEDs to display a message when the noise level that you select during set up has been breached
- This instrument is available in five distinct designs and multiple languages
- Cover an area of up to 30m by daisy-chaining 3 SoundSign Remote Display units
The SoundSign Remote Display Unit
Protect your workspace and keep people alert to excessive noise levels
The SoundSign Remote Display unit from Cirrus Research is an easy-to-install warning sign which can be used with a SoundSign Master unit to provide extra visibility across a larger area.
This noise-activated warning sign uses LEDs to display a message when the SoundSign Master’s trigger level has been breached.
Multiple designs and languages
- This instrument is available in four distinct designs and multiple languages.
- Hearing Protection Must Be Worn
- Warning High Noise Levels
- Caution High Noise LevelsShhh! Quiet Zone
Application
Noise-activated warning sign
Visual indication
High-intensity white LED with five standard designs
User-selectable brightness levels
Display delay time
None or 30 seconds
External power
2.1mm power jack to connect to SoundSign Master unit
Output connector
Control for remote display units via standard 2.1mm power jack
Dimensions
12″ diameter, 2″ depth
Weight
1.3lbs (0.6kg)
Mounting
2 x keyhole mounting slots