Outdoor Environmental Noise Kit
Noise MonitorsThe Outdoor Environmental Noise Measurement Kit protects your Optimus+ Environmental Sound Level Meter with a weatherproof case and outdoor microphone. With the optional modem and GPS, you can download your measurements with a GPS location, as well as connect to the MyCirrus cloud for real-time alerts and notifications.
- Weatherproof case and outdoor microphone
- Optional modem and GPS
- 12-day battery or mains supply
- LAeq, Ln, LMax, LMin
- Audio recording
Environmental Noise Measurement Kits
Make accurate, compliant noise measurements in any environment
Environmental conditions can significantly impact the accuracy of sound level measurements, particularly when conducting assessments in outdoor environments, so this is where an Outdoor Environmental Noise Kit can help you. The kit provides a fully weather-protected system for outdoor noise measurement to protect your sound level meter and microphone from harsh weather conditions, ensuring reliable and accurate readings in any environment for up to 1 week.
The Outdoor Environmental Noise Measurement Kit includes:
The Outdoor Environmental Noise Measurement Kit Range

The Outdoor Environmental Noise Measurement Kit includes a weatherproof case and outdoor microphone to protect your Optimus+ Environmental Sound Level Meter from harsh weather conditions such as rain, dust and wind, ensuring reliable and accurate readings in any environment for up to 1 week.

The Outdoor Environmental Noise Measurement Kit protects your Optimus+ Environmental Sound Level Meter with a weatherproof case, and includes a modem and GPS so you can download your measurements with a GPS location, as well as connect to the MyCirrus cloud for real-time alerts and notifications.
Environmental Noise Monitoring
Your Outdoor Environmental Noise Kit includes an Optimus+ Environmental Sound Level Meter. Watch the product video to find out how the Optimus+ Sound Level Meter makes environmental noise assessments easier than ever
Applications for the Outdoor Environmental Noise Measurement Kit
The Outdoor Environmental Noise Kit provides a robust, reliable solution for medium and long-term measurements in any environment.
The environmental noise measurement kits provide weather protection for the sound level meter and the microphone, allowing for noise measurements over long periods where the equipment is unattended and making it ideal for environmental noise monitoring. This allows effective, accurate noise measurements to be made where it’s not possible to have staff on-site with the equipment at all times.
Construction noise monitoring involves the measurement and assessment of noise generated by construction activities. It is essential for evaluating and managing the potential impact of construction noise on nearby communities, workers, and the environment.
For construction sites, receiving real-time alerts when pre-set noise limits have been exceeded, or are close to being exceeded, can be an effective noise control process. As this information can be provided in real-time (either to staff on-site or to a remote office) it can enable site managers to investigate the source of the noise and to take quick, effective actions to remedy the issue. The MyCirrus Notification App provides real-time notifications and alerts, allowing for effective control of construction site noise levels.
For boundary noise monitoring, measurements when noise sources are not operating (over a weekend for example) can be critical in determining if there is significant impact when the site is in operation.
By using an environmental noise measurement kit, data can be gathered over extended periods when noise sources are and are not operating, allowing more robust assessments to be made.
Logging data over long periods before, during and after the construction of a wind farm can often be the only way to effectively judge the impact of operations and the environmental noise measurement kits can assist in this task.
The advanced triggers in the Optimus sound level meters can provide real-time alerts when overall levels or specific frequencies are exceeded as well as when tonal noise is detected.
Learn more about our Outdoor Environmental Noise Kit
If you would like to learn more, a member of our team will be happy to help
The Outdoor Environmental Noise Kit is a weather-protected measurement system that houses a Cirrus Optimus+ Environmental Sound Level Meter for reliable outdoor noise monitoring in harsh environmental conditions such as rain, wind or dust. It allows unattended noise measurements over extended periods.
The kit typically includes:
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Weatherproof case and outdoor microphone to protect the instrument
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Choice of batteries or mains power supply for extended deployment
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Option to include a modem and GPS for remote connectivity
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Optimus+ Environmental Sound Level Meter (Class 1 or Class 2, selectable)
You can either add your own Optimus+ Environmental Sound Level Meter or choose one as part of the kit purchase in your required class (Class 1 or Class 2).
With an Optimus+ meter installed, the kit can measure typical environmental noise parameters such as LAeq, Ln, LMax and LMin and also supports audio recording based on custom triggers.
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Standard Outdoor Kit – protects the meter and captures noise data onsite with long battery life.
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Outdoor Kit with Remote Access – includes a modem and GPS, enabling remote data download with location stamping and real-time alerting via MyCirrus cloud services.
The kit supports up to around 12 days of battery life (depending on battery choice and settings) and can also be powered by a weatherproof external mains option for longer deployments.
Data can be downloaded either by physically accessing the instrument or, with the Remote Access version, remotely via MyCirrus cloud services and GPS location tagging for easy tracking of measurements.
The Outdoor Environmental Noise Kit is ideal for:
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Unattended environmental noise monitoring
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Construction site noise assessments
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Boundary noise investigations
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Wind farm and long-term environmental assessments
allowing data collection without having staff present continuously.
Yes, by using the acoustic trigger features of the Optimus+ meter, the system can automatically record audio when user-defined conditions are met, aiding in source identification.
Yes, the kit’s weatherproof casing and outdoor microphone cover are designed to protect the meter and microphone from outdoor elements, ensuring accurate and reliable noise measurements in varied environmental conditions
When configured with a Class 1 Optimus+ Environmental Sound Level Meter, it meets international environmental noise measurement standards (IEC 61672).
When configured with a Class 1 Optimus+ Environmental Sound Level Meter, it meets international environmental noise measurement standards (IEC 61672).
Acoustic Measurements
Determined by Optimus Green Sound Level Meter. Please see Optimus Green Specifications
Connectors
Microphone input from MK:172 Outdoor Microphone
External Power Connector
External power
12-18v DC
Dimensions
465 x 180 x 355 mm
Weight
14.1 kg / 31 lbs including: 2 x batteries, charger & outdoor microphone








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