About us
Alertis is a market leader in the Belgian fire safety and security sector: we commission more than 1,000 technological safety systems annually, manage approximately 6,700 systems under contract with specific SLAs, and currently have around 19,000 systems in operation across various markets.
Our customers rely on us for our innovative solutions featuring integrated, best-in-class products, both in fire safety (specifically fire detection and gas detection) and in security (including intrusion detection, video surveillance, access control, and security management systems).
We make safety clear, smart, and reliable.
Safety is not just technology. It is a feeling. That sense of trust, peace of mind, and security—that is what we work toward every day.
Alertis is a Belgian family-owned company with over 30 years of experience in fire safety and security. We protect organizations where safety is critical: healthcare facilities, industry, logistics, heritage sites, SMEs, and public buildings.
Core business
efficiency
Alertis places great importance on providing efficient service. We achieve this by coordinating our operations from two locations, providing ongoing training for our service technicians, and having technically experienced project managers design your integrated security systems.
expertise
Alertis has built up extensive expertise in the healthcare, industrial, logistics, commercial construction, heritage preservation, and leisure sectors. The company works closely with a network of electrical contractors.
quality
Alertis holds the Bosec quality label as a specialized fire detection company and the Incert label as a specialized installer of intrusion detection and CCTV systems. Alertis is also a licensed company for alarm and camera systems and holds ISO 9001:2015 and VCA** certifications. Alertis is a registered contractor in categories 26 and 27 and is certified as a Class 4 contractor, category P1.
Mission and strategy
mission
We develop and maintain security solutions that protect people, buildings, and processes.
With state-of-the-art systems, exceptional service, and a team available 24/7, we ensure that your organization remains safe and operational.
vision
Safety is both a physical and an emotional need. That’s why we create security solutions that: work reliably in any situation, think proactively, are easy to use, and are fully tailored to our clients’ industries and risks.
We combine innovation with human expertise - because safety is always about people.
strategy
We serve the healthcare, industrial, logistics, tourism & leisure, cultural heritage, and commercial construction sectors by offering best-in-class security solutions, thanks to the specialized expertise of our project managers and the technical know-how of our technicians. Our strategy is based on a strong customer partnership (known as “customer intimacy”), where service and connectivity provide them with unique added value. Customer-centric innovation, a strong internal organization, and an independent position ensure the success of this strategy.
History
establishment 
Guy Slagmulder becomes CEO
Acquisition of Studio Lenaerts
Acquisition of Cools Security
New office in Beveren
Acquisition of AABS
launch of Safespace
steady growth
name change to Alertis
Expansion of the office building in Roeselare
Acquisition of Gas Applications & Services
Acquisition of P&M Technology
establishment
Alertis was founded in 1990 under its original name, Ardovlam, and from the very beginning focused on the design, installation, maintenance, and repair of fire alarm systems.
For quite some time, the company’s added value lay in a strong product in fire detection; however, the scope of its activities gradually expanded to include intrusion detection, access control, video surveillance, and integrated security.
1990
Experience & Trust
A constant feature of the strategy has been a focus on up-to-date technical expertise, high-quality service, and long-term partnerships with customers and suppliers. Over the course of 30 years, a loyal network of partner electrical installers has been built up, and nearly 20,000 customers have entrusted their security to Alertis.
Operational excellence
Thanks to its strong organizational structure, Alertis has consistently been a pioneer in obtaining all relevant quality certifications (ISO, VCA, BOSEC, INCERT) and digitizing processes; the company’s focus shifted to operational excellence. Through strategic acquisitions that were fully integrated, its reach expanded to cover all of Belgium.
Guy Slagmulder becomes CEO
In 2003, Guy Slagmulder took the helm at Ardovlam. Drawing on his knowledge and experience, he continued to drive growth and innovation. Under his leadership, the company was nominated multiple times as a Trend Gazelle in the years that followed.
2003
Acquisition of Studio Lenaerts
With the acquisition of Studio Lenaerts, Ardovlam now also has a base of operations in Limburg. Studio Lenaerts’ client portfolio includes numerous historic heritage sites. As a result, Ardovlam will be installing a significant number of systems in churches and cathedrals in the coming years. Securing historic heritage sites will therefore become a core focus for Ardovlam.
2008
Acquisition of Cools Security
With the acquisition of Cools Security, Ardovlam’s customer base will expand to include primarily residential burglar alarm systems.
2011
New office in Beveren
Ardovlam is moving to its new building at 13 Kruisboommolenstraat. The offices in Ardooie had become too small, and with an eye toward the future, the company decided to build a brand-new office. The building was completed in 2011, and the staff was able to move into the new site.
2011
Acquisition of AABS
Innovation and growth: these are two pillars on which Ardovlam is strongly committed. With that in mind, the company is acquiring AABS in Antwerp. As a result, Ardovlam now has branches in three different provinces.
2014
launch of Safespace
Recent innovative products make it possible to strengthen our relationship with our customers even further through remote servicing. In 2019, Alertis launched Safespace, an online platform that integrates and analyzes all your security data and enables online monitoring.
2019
steady growth
Thanks to its focus on service, solid technical expertise, and strong relationships built on trust with its customers, the company is able to achieve steady growth.
2010-2020
trends gazelle
Between 2010 and 2020, Alertis was nominated 10 times for the Trends Gazellen West Flanders awards. The continuous growth of our people and our services is an integral part of our strategy.
growth across the board
Alertis operates throughout Belgium and has offices in Roeselare (HQ), Ghent, Lummen, and Wilrijk. In 2020, the company had 92 employees. Annual revenue amounts to €15 million. Alertis has partnership agreements with the following manufacturers and importers: Limotec, Honeywell Morley, Bosch Security Systems, Nedap Security, Prysm, Satel, and Avigilon.
name change to Alertis
We may be a market leader in fire safety, but above all, we are an innovative company that offers comprehensive solutions for building security.
2020
forward-looking
The 30-year-old name had long since ceased to reflect who we are, as we now cover all areas of security and have grown into a professional player with four locations (Roeselare, Ghent, Antwerp, and Lummen). That is why, as we embark on a new decade with a new business plan and an energetic team, we chose a broad and fresh name that is ready for the future.
seriously safe
“Seriously Safe” is our new tagline, and it immediately reflects the identity of Alertis and our own. We are a dedicated team of professionals who take people’s security and safety seriously, because safety is a fundamental right, and we want to do our part to ensure it. Our vision is to give our clients a genuine sense of security.
Expansion of the office building in Roeselare
Renovation work on the office building in Roeselare began in November 2020.
2020-2021
expansion
The existing building was expanded to include a second floor, which houses several meeting rooms as well as a modern kitchen with a dining area and an outdoor terrace.
renovation
An elevator was installed in the entrance hall, and several rooms on the ground floor were repurposed. In addition, the demo room was completely renovated.
Acquisition of Gas Applications & Services
In early 2021, Alertis NV acquired the business assets of industry peer Gas Applications & Services, based in Sint-Lambrechts-Woluwe, which had been operating for more than 20 years as a specialist in gas detection and had over 1,000 active installations throughout the country.
2021
Acquisition of P&M Technology
In 2022, we continued to focus on expanding our knowledge and expertise, as evidenced by the acquisition of industry peer P&M Technology in Herk-de-Stad.
2022
CCTV and access control
As a result of this acquisition, Alertis is further expanding its knowledge and expertise in the field of CCTV and access control integration, particularly in the logistics sector. The focus was primarily on applications for video surveillance (Avigilon) and access control (Nedap), both brands that Alertis also actively utilizes.
Expansion of the Limburg team
At the same time, we are expanding our team of 15 employees in the province of Limburg; here, too, we are becoming a leading player. Our employees and customers will be part of a growth story that places them in a professional yet family-like environment.
Speaking
Dear Customers,
It is a great honor for us to advise and assist you with your security needs. After all, you come to us with questions regarding your personal physical safety, that of your employees, or that of your family—or perhaps you simply want to be 100% certain that you won’t lose something precious to you. At Alertis, we have enjoyed your trust for 30 years; this amounts to more than 19,000 installations.
That is why we are committed to doing everything in our power to live up to this trust: by developing a robust concept through our team of project managers, by recommending best-in-class products completely independent of manufacturers, by continuously training our 65 service technicians, by providing 24/7 technical support, and by meticulously documenting your installation to ensure efficient after-sales service.
Safety is not a commodity, a common good; no, it is a custom solution and requires the full attention and expertise of your supplier. Safety is a fundamental emotional need, and we are happy to make it our sole core business.
Would you like one of my colleagues or myself to meet with you as a client soon?
Sincerely,
Guy Slagmulder
“Safety is a basic need; we make it our core business.”
Guy Slagmulder - CEO
Guy Slagmulder
CEO
Guy holds a degree in Electrical Engineering and has completed a general management program at Vlerick Management School. He has nine years of experience in investment banking (primarily for IT companies) and four years of experience in financial and general management within an SME environment. Guy became a shareholder and managing director of Alertis NV in 2003.
Certificates
BOSEC
ALERTIS NV is certified as a specialized installer of fire detection systems in accordance with the regulations of Assuralia and the CEA (European Committee of Insurers) under number B-9066-FD
BOSEC’s objective is the certification (and subsequent monitoring) of all methods, systems, products, and personnel related to protection against fire and intrusion. BOSEC’s members include representatives from companies, users, insurers, standardization bodies, research and testing institutions, and laboratories.
INCERT Intrusion
Incert is the quality label for the Belgian alarm sector (including security industry federations, the professional association of insurance companies (Assuralia), users, security engineering firms, the FPS Interior, and insurance brokers).
The security company’s Incert certification is based on verification of its accreditation by the FPS Interior, an administrative assessment, and a technical assessment of completed installations. Alertis is Incert certified under number B-1560.
INCERT Video
The Incert Video Certificate guarantees the high-quality installation of your video surveillance system by your specialized installer, in this case Alertis. The label ensures the origin of the products, professional installation, thorough training and advice for customers, and professional after-sales service. As an INCERT installer, we are audited annually by an independent body to verify these standards. Alertis is Incert certified under number VB-0009.
ISO 9001:2025
The international standard ISO 9001 specifies the requirements for a quality management system. This standard sets out requirements that enable an organization to demonstrate its ability to consistently provide products that meet customer and applicable regulatory requirements, and to ensure customer satisfaction through the effective application of the system, including continuous improvement.
Alertis is certified according to the ISO 9001 standard for its entire range of activities, including the study, design, manufacture, installation, maintenance, and repair of security systems for fire and gas detection, intrusion detection, video surveillance, and access control.
VCA**
Every client commissioning work must ensure that the contractor takes the necessary preventive measures when carrying out the work. One option available to the client is to engage contractors who hold a label, certificate, or other form of accreditation demonstrating that they have implemented a safety management system. Various safety management systems have been developed that allow contractors to demonstrate that they are taking the necessary preventive measures to minimize risks to their own employees and those of the client. VCA (Safety, Health, and Environment Checklist for Contractors) is a certification process in which a certification body, based on an audit of the company and its work sites, verifies whether the applicant meets the assessment criteria for VCA certification. While VCA* is primarily intended for subcontractors, VCA** is intended for general contractors. Alertis holds the VCA** certificate.
Licensed security company
The Act of April 10, 1990, and the Royal Decrees of June 13, 2002, and April 7, 2003, set forth the conditions for obtaining accreditation as a security company. These include, among other things, training requirements for staff, technical equipment for the secure management of client files, 24/7 availability, and a requirement to respond within 8 hours.
ALERTIS NV Accreditation No.: 20 01 172 19
Registered contractor (categories 26 & 27, class 4 P1)
Voka Charter on Sustainable Business
Our efforts in the area of sustainable business were recognized with the Voka Charter for Sustainable Business (VCDO) certificate. Over the past year, we have linked at least 10 initiatives to sustainability themes and the UN’s 17 Sustainable Development Goals (SDGs). Some of our initiatives included implementing a cybersecurity improvement program, introducing Fitcoins, further digitizing our HR processes, focusing on remote access, continuing to implement digital signatures via DocuSign, and adding QR codes to security systems, among others.
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