UNI 11988:2025 is an Italian national standard issued by UNI (Ente Italiano di Normazione). It defines the technical and operational requirements for Emergency Voice Alarm Communication (EVAC) systems interfaced with fire detection and fire alarm systems. Published in 2025, the standard provides a comprehensive framework to help ensure effective voice-based emergency communication in buildings.

Purpose and context

Traditional audible alarms (sirens or bells) may not provide sufficient guidance during emergencies, especially in complex buildings or crowded environments. UNI 11988:2025 addresses this gap by regulating systems that deliver clear, intelligible spoken messages to occupants – supporting faster, more orderly evacuations and reducing panic. The standard reflects modern fire-safety engineering principles and aligns with performance-based safety approaches.

Scope

The standard applies to newly designed and installed EVAC systems integrated with fixed fire detection systems. It covers the full lifecycle of these systems, including:

• System design and acoustic planning
• Installation and system integration
• Commissioning and functional testing
• Operation, inspection, and maintenance

Simple acoustic warning devices without voice functionality are explicitly excluded.

Key technical principles

UNI 11988:2025 places strong emphasis on speech intelligibility, system reliability, redundancy, and power-supply continuity during emergencies. It sets criteria for loudspeaker placement, zoning, message prioritization, and coordination with fire detection logic. Verification and testing procedures help ensure that system performance remains consistent over time.

Acoustic verification: what is measured on site

To confirm that voice messages are delivered effectively, verification activities typically include measuring sound pressure level (SPL) of EVAC messages at representative points, STIPA and RT60 inside acoustic areas (ADA) background noise levels (including building services when relevant), and checking the signal-to-noise margin that affects message clarity. Where needed, octave/third-octave band analysis helps identify frequency-related issues and supports corrective actions (e.g., loudspeaker tuning, zoning or placement adjustments). Test results should be recorded and reported to ensure repeatability over time and to support commissioning and periodic checks.

Applicability and value

Although voluntary in nature, UNI 11988:2025 represents recognized best practice in Italian fire-safety design. It is intended for fire-safety engineers, system designers, installers, building owners, and authorities having jurisdiction. Adoption of the standard supports regulatory alignment, enhances occupant safety, and improves emergency response effectiveness.

Conclusion

UNI 11988:2025 marks a significant step toward safer, more intelligible emergency communication in buildings. By standardizing EVAC system design, verification, and management, it contributes to higher levels of fire safety and more controlled, effective evacuations.

To support implementation of the new standard, Senseca’s XPT800 Class 1 sound level meter helps professionals verify EVAC acoustic performance through accurate measurements of message SPL and background noise, enabling consistent reporting and documentation of results in line with UNI 11988:2025.

Go to XPT800 Class 1 Sound Level Meter Product Page. 

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An evolution for acoustic professionals

Designed on a scalable platform, the XPT800 is perfectly suited to the evolving needs of professionals. Integrating advanced technologies and benefiting from expert input, this instrument offers high-level performance, unparalleled accuracy and an intuitive user experience.

From environmental noise assessment and workplace risk analysis to industrial or laboratory product testing, the XPT800 is the ultimate solution for those seeking uncompromising quality.

Features that make the difference

✔ Completely redesigned software modules – Delivering advanced functionality, in-depth analytics, and unprecedented versatility.

✔ Ergonomic and Portable Design – Compact, lightweight and designed for one-handed operation, perfect for measurements in the field.

✔ Unmatched Versatility – Interchangeable microphones and upgradeable functions for multiple uses.

✔ Colour touch screen display – 4.3’ touch screen for intuitive navigation and clear data display.

✔ Durability and reliability – Built with robust materials to ensure excellent performance even under extreme conditions.

✔ Expandable memory – 4 GB internal memory on eMMC or external USB stick.

✔ Advanced wireless connectivity– Data transfer via integrated Wi-Fi, Ethernet, or 4G.

✔ Wide dynamic range – Linear range of 123 dB for accurate measurements in both quiet and noisy environments. – Measurable peak level up to 140 dB, extendable to 178 dB with a dedicated microphone set for high sound levels.

✔ Long battery life – Over 24 hours of continuous measurement thanks to intelligent power management.

✔ Automatic event identification – Automatically records noise, ideal for long-term environmental monitoring.

✔ Advanced Trigger and Logging Capabilities – Unique logging features and advanced trigger logic with exceedances detection on broad levels and spectrum masks.

The Future of Acoustic Measurement is Here

If you are looking for a next-generation sound level meter that provides reliable and versatile measurements, the XPT800 is the ideal choice.

Download the XPT 800 and XPT 801 presentation brochure here. 

Find full detailed technical specifications of the XPT800 here.

Find full detailed technical specifications of the XPT801 here.

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Designed for precision and reliability, this fast-response spectrally flat Class A pyranometer meets ISO 9060:2018 standards and follows World Meteorological Organization (WMO) guidelines, ensuring the highest quality data for professional applications.

Equipped with an integrated heater, tilt sensor, and advanced diagnostics, the LPR10 delivers accurate global irradiance measurements, even in the most demanding environmental conditions. Its fast response time makes it the most advanced pyranometer to date, offering unmatched performance for solar energy monitoring, meteorology, and research.

Key Features:

• Integrated Heater: Heating automatically activated to prevent dew and frost formation while maintaining uniform temperatures, enabling fast response times and precision even under extreme weather conditions. The heater can also be switched off to save power when not required.
• Advanced Diagnostics: Built-in sensors monitor internal temperature, humidity, and pressure, providing proactive maintenance alerts and ensuring optimal operating conditions.
• Tilt Sensor and Easy Installation: Includes an integrated bubble level, adjustable feet, and continuous tilt monitoring for accurate and consistent positioning during installation.
• Real-Time Monitoring: Fully compatible with DATAsense PC software, enabling configuration, real-time graphical visualization, and data logging for post-analysis.
• Flexible Integration: Features RS485 Modbus-RTU output for seamless integration into existing monitoring systems.

The LPR10 offers unparalleled accuracy with a measuring range of -200 to 4000 W/m², a resolution of 0.1 W/m², and a fast response time of less than 0.3 seconds. Built with durability in mind, the IP67-rated device operates reliably in temperatures from -40°C to +80 °C and up to 6000 meters in altitude.

Its compact and robust design is ideal for a wide range of applications, including environmental studies, meteorology, photovoltaic (PV) system monitoring and research projects.

Find here all technical specifications.

Find here a comprehensive overview of all our Pyranometer Series.

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“We at Senseca are delighted to welcome GEONICA to our team. We believe our shared technologies and market know-how will be extremely beneficial to all parties. GEONICA brings to the table strong data logger competence, expertise in data acquisition, transmission and management via its own solutions.” said Senseca Chief Executive Officer Christian Unterberger.

“With the skill set that this acquisition brings to Senseca, we see opportunities to grow our global presence through the expansion of our measurement instrumentation range, giving us a greater market reach. Thanks to the synergy of our technical solutions, we are now able to deliver comprehensive environmental measurement systems that fully meet the needs of our customers” said Unterberger.

As part of the transition, GEONICA President and CEO Carlos Gómez Carrió will be leaving the company and handing over his responsibilities to Miguel Martinez as Managing Director (currently Operations and Commercial Director). CEO Carlos Gómez Carrió leaves GEONICA with a reputation of having a never-ending passion for innovative measurement solutions that has resulted in the continued growth and internationalization of the company, which is held in high esteem and is a well-respected provider within the industry.

“Today is a historic day for all of us at GEONICA. By joining the Senseca family, we have reached an important milestone that I have been dreaming of since I founded the company in 1974. The
achievement of an international presence with our own products and advanced technological solutions” concludes CEO Carlos Gómez Carrió.

“The synergy between our two companies will put Senseca in a strong position for market growth. Our joint investment, conducted in the past into research and development, as well as our engineering expertise and our market knowledge will play a key role when it comes to partnering in the design and manufacturing of seamless environmental measurement solutions for our customers. I very much look forward to the positive challenges that will come hand in hand with my new role” commented the new Managing Director Miguel Martinez.

Christian Unterberger stated that from the first time they met he felt that both companies shared a joint purpose in their belief in contributing to a more sustainable world through technological innovations. He concluded “We already play a significant role in key applications related to megatrends like smart cities & factories, renewable energy, water management, and weather monitoring. This acquisition marks the next step in our journey to becoming the leading provider and preferred partner for measurement technology.”

Press Release can be downloaded here.

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October 24, 2024 – Senseca, a global leader in environmental monitoring and measurement technology, has acquired British-based Biral, a provider of high-precision meteorological sensors. This acquisition strengthens the Senseca portfolio and supports its strategic focus of addressing global megatrends like weather monitoring and the transition to renewable energy.

Senseca has acquired the full shareholding of Biral, who will gradually be integrated into the Senseca operations whilst maintaining its own branding for the time being.

With decades of experience and a strong international presence, Biral has been at the forefront of setting the industry standard for advanced environmental sensors. The company’s focused portfolio is highly recognized for its precision in monitoring visibility, present weather conditions, and thunderstorm detection, serving customers across multiple industries worldwide.

Biral’s in-depth expertise and specialized products will enable Senseca to strengthen its position as a global leader in environmental sensor technology. This acquisition will support Senseca’s strategic focus on solutions that address critical environmental challenges, with an emphasis on the growing demand for advanced weather monitoring systems.

Chief Executive Officer of Senseca, Christian Unterberger, commented on the acquisition: ” Biral’s highly specialized focus on visibility and present weather sensors, as well as thunderstorm detection, fits perfectly with our strategy of creating a very focused and comprehensive portfolio of environmental sensor technologies. Biral’s innovative solutions will enable us to address the growing demand for precision weather monitoring across multiple sectors, from renewable energy to aviation, marine, infrastructure and road safety.”

As part of the transition, Biral’s CEO Paul Smith will retire after decades of dedicated service, handing over to Finance Director Ben Lockwood, who will become Biral’s new Managing Director.

Paul Smith,reflects on his time at the company “It has been an honour to lead Biral and witness our growth into a company known for precision and reliability. I’m confident that under the leadership of Senseca, Biral will continue to thrive and innovate for the benefit of our clients and the industries they serve.”

“I’m delighted to take on the Managing Director role as Biral joins Senseca,” said Ben Lockwood. “This transition presents a great opportunity for us to benefit from Senseca’s large global network and resources. This will enable us to continue to enhance our legacy of the development of innovative technologies and deliver even greater value to our customers. We at Biral are excited to be joining Senseca on this road to greater expansion for the future” Lockwood concluded. With this acquisition, Senseca solidifies its leadership in environmental measurement solutions, ensuring continued innovation and support for key industries driven by the need for real-time, accurate environmental data.

 Press Release can be downloaded here.

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Depending on the model and according to ISO 9060:2018 and WMO recommendations, they are classified as:

• PYRAsense10 – Spectrally Flat Class A
• PYRAsense02 – Spectrally Flat Class B
• PYRAsense03 – Spectrally Flat Class C

Based on a smart technology, specifically designed for this product line, all pyranometers are provided with internal diagnostic sensors to always keep the internal temperature, relative humidity, and pressure under control. Moreover, keeping an eye on the operating conditions of the sensors also allow to predict any maintenance work in advance, thus always ensuring reliable measurements.

Special attention has also been given to the ease of installation: the integrated bubble level remains visible even when the UV radiation protection screen is used. In addition, the pyranometer can optionally be equipped with a tilt sensor.

PYRAsense connection provides maximum flexibility for integration into any existing network: sensors are available with RS485 Modbus-RTU output galvanically isolated + optional analog output, user configurable.

The configuration of the sensors as well as the real time monitoring of the measurement is done via the dedicated DATAsense PC application software.

PYRAsense family has been designed to meet multiple needs: from the best economical solution for measuring solar efficiency (Class C) to the solution for those applications where the best possible performance is a must (Class A). More specifically in photovoltaic systems where the standard IEC 61724-1 is a must!

Discover here our comprehensive solar monitoring solutions.

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Remscheid, 22 June 2023 – One company, one brand, one purpose: to become an enabler of a sustainable future. From 1 January 2024, the GHM GROUP, a leading sensor technology company, will become Senseca.

More than a rebranding project: the five GHM GROUP brands (Honsberg, Greisinger, Martens, Val.Co and Senseca) will combine their expertise to continue their success story within Senseca by maintaining the same entrepreneurial spirit as their founders.

‘The transition from a group with five brands to a single company is a major change in how we approach the market and develop our products’, says GHM GROUP CEO Christian Unterberger. In an ever-evolving world, we want to create an agile company that can respond quickly to customer needs and market trends’.

Senseca’s philosophy is clear and simple: place the customer at the heart of every decision and help them grow through an application-based approach. The new ‘One Face to the Customer’ focus is on simplification – translating into easy access to the entire product range and an improved customer experience.

‘Concentrating our efforts on a single brand, we can build stronger and longer lasting relationships with our customers, exploit synergies between sites and differentiate ourselves in a sometimes complex market’, says Stefan Langer, Vice President of the Industrial Business Unit.

The expertise of each brand is pooled in multidisciplinary teams working in three business units: Environmental, Industrial and Portable. People remain at the heart of the business, and their contribution of skills, knowledge and commitment will continue to be crucial to grasp the growth opportunities involved in this change.

‘Each of us bears a unique and complementary value, and it is only by adding these elements together that we can truly generate a positive impact on ourselves, on the people around us, and, in this case, on this new opportunity we are about to experience’, says Gianluca Maestroni, current CEO of Senseca and Vice President of the Environmental Business Unit.

The name Senseca is a neologism with several meanings. First and foremost, ‘sense’ stands for sensors, the core business of measuring, monitoring, testing and control equipment. But ‘sense’ also stands for the new shared purpose that sets Senseca’s future direction: ‘to provide reliable data and facts that enable businesses and society to improve the ecological and economic status quo with custom-made technology solutions.

‘At Senseca, we strive to safeguard our planet by balancing economic interests with environmental goals. There can be no economy without a healthy planet, and companies can make a vital contribution’, says Roland Baeuml, Vice President of the Portable Business Unit. We want to rise to this challenge and become a role model in sustainable measurement technology’.

Company profile

GMH GROUP is a leader in measurement technology. With sixty years of experience in equipment development and production, it provides customized processes and solutions for specific applications: measurement of level, flow, pressure, temperature, conductivity and industrial monitoring electronics for mechanical and plant engineering, HVAC, portable instruments and environmental technology. The group operates five innovative companies (Honsberg, Greisinger, Martens, Val.Co and Senseca) and employs over 300 people at five production sites. 

Senseca is a registered trademark of the GHM GROUP CORPORATE. On 1 January 2024, the GHM GROUP with its five brands (Honsberg, Greisinger, Martens, Val.Co and Senseca) will be merged into a single agile company: Senseca.

For further information please contact:

marketing@ghm-messtechnik.de

+49 (0)2191 967 266

Senseca Germany GmbH
GHM GROUP CORPORATE
Tenter Weg 2–8 | 42897 Remscheid | GERMANY Tel. +49 (0)2191 9672-0
www.ghm-group.de | www.senseca.com

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The high impedance signal generated by precision microphones, which is very sensitive to the characteristics of the transmission cables, needs to be amplified and made compatible with the input specifications of professional measurement systems. The quality of transduction of this signal depends on the preamplifier, a fundamental element of the measurement chain.

To be sure you get the most out of your measurements, the new series of CCP / IEPE compatible preamplifiers and microphone sets are now available!

The new series are easy to integrate with other sensors into CCP based systems. Moreover, the standardized 2…20 mA power supply makes them compatible with most professional measurement systems and allow the use of two-wire common low cost cables with BNC connectors.

Therefore, flexibility and high accuracy at affordable cost are combined in just one product.

Besides the preamplifiers, also complete microphone sets are available. All available sets consist of a CCP preamplifier and a precision microphone with individual calibration and sensitivity values.

Go here to see all different models available and choose the best one for your application!

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These include as well UV lamps and their capacity to inhibit viruses. According to recent studies, it appears that the application of UVC ultraviolet radiation used by the new LED lamps has proved to be highly effective.

The result is a significant increase in the market of UV LEDs available with a wavelenght centered around 265 and 275 nm which corresponds to the maximum germicidal efficiency range. If the sensitivity of the traditional UVC probes changes rapidly around 270 nm and makes them indicated for other UV light sources, our new LP471UVBC radiometric probe is the perfect solution for UV LED lights used for the verification of germicidal lamps in sterilization systems.

The LP471UVBC probe has a wider spectral range compared to traditional UVC probes and uses a special solar-blind photodiode with an appropriate filter provided with a diffuser. Used in combination with our portable luxmeters HD2302.0 or HD2102.2, you have a turnkey solution either you need to simply measure and read, or you need a more advanced solution with logging feature.

Moreover, the ISO 17025 Calibration Certificate, issued by our own accredited Photo-Radiometry laboratory, guarantees that your measurement are always correct and accurate.

Go here to find out the technical details of the probe and our special combination kits!  

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Knowing the exact content of PM is of the utmost importance to follow the WHO air quality guidelines recommending exposure limits to key air pollutants and reduce their adverse health effect on human being.

Cost effective and reliable, PMsense is the perfect solution in smart city applications and environmental monitoring especially close to sources of PM such as construction sites, industrial activities, smokestacks, power plants, combustion engines, road traffic

Based on laser scattering measuring principle, PMsense ensures a very accurate reading of PM1.0, PM2.5 and PM10 particle counts.

The configuration of the instrument and the reading of the measurements can be done via the RS485 serial output, both with the proprietary protocol and with the MODBUS-RTU protocol and the results are reported in μg/m³. In combination with one of our loggers, collected data are then sent via HTTP to the Senseca Cloud and therefore available on any device.

As a producer of Automatic Weather Stations, we also recognize the demand from the market in having PM measurement in combination with an AWS. The PMsense is ready to be fully integrated: simple and fast, plug and play without any further start up. By incorporating this measurement in AWS we can provide early warnings when air pollution is getting close to the danger zone.

Go here to see full details of the PMsense, including datasheet and specifications.

If you are looking for a version for inside measurement and detection, go here to see full details of our HD50PM data logger for indoor.

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