Intrusion detection system VdS classes categorise systems according to their degree of protection against attempts to overcome them and the response sensitivity of their detectors. Classes A, B and C, defined in VdS 2311, range from basic protection to the highest security requirements. Choosing the right class is crucial to the effectiveness of the burglary protection and to recognition by insurers.

Independent planning for optimal burglary protection in companies

Intrusion detection systems (EMA) are a cornerstone of corporate security. But which VdS class is right for your property? A well-founded decision requires in-depth knowledge of the VdS guidelines and their practical application.

Key Takeaways

  • VdS classes A, B and C define the degree of protection of intrusion detection systems and are decisive for the security and insurability of your property.
  • An independent risk analysis and manufacturer-independent planning are essential to choosing the optimal VdS class and realising a legally compliant, cost-efficient EMA.
  • PLANATEL® offers over 34 years of experience in planning security systems and helps you avoid common mistakes in EMA design and ensure long-term security.

The 2025 police crime statistics recorded 82,920 residential burglaries nationwide, an increase of 5.7% over the previous year, and the 2025 Security Monitor shows that 41 percent of companies have been affected by at least one burglary in the last two years. To effectively counter these risks, the correct planning and implementation of an EMA is essential. VdS classes play a central role here. They define the standard for the reliability and effectiveness of intrusion detection systems and are often a prerequisite for insurance cover. Choosing the right VdS class is a strategic decision with far-reaching effects on the security of your company.

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Fundamentals of intrusion detection systems and the role of VdS

Intrusion detection systems (EMA) are technical systems designed to detect and report unauthorised entry into buildings or secured areas at an early stage. They comprise a variety of components, such as detectors, control panels and alarm devices, which work together to guarantee comprehensive protection. The effectiveness of an EMA depends largely on its planning, installation and the components used. This is where VdS Schadenverhütung GmbH comes in, a recognised institution for corporate security and protection. VdS develops and publishes guidelines that serve as a benchmark for the quality and reliability of security technology. VdS guideline 2311, for example, sets out the minimum requirements for the planning, installation, operation and maintenance of intrusion detection systems of classes A, B and C. These guidelines are not only technical specifications, but also decisive for recognition by insurers. A VdS-certified EMA signals a high level of verified security and can have a positive effect on insurance premiums. VdS certification ensures that the system not only functions reliably in an emergency, but is also protected against manipulation and false alarms. For companies, this means an investment in sustainable security and legal compliance.

The VdS classes at a glance: A, B, C and their significance

VdS guideline 2311 divides intrusion detection systems into three main classes: A, B and C. This classification enables the protection level to be precisely matched to the individual risk and the assets to be protected at a property. Each class defines specific requirements for resistance to attack when armed and disarmed, as well as the response sensitivity of the detectors and the monitoring of safety-relevant functions. The VdS classes are closely linked to the grades of DIN VDE 0833-3 (alarm systems - part 3: intrusion and hold-up alarm systems), with the VdS guidelines often placing more far-reaching, field-proven requirements. However, a direct equivalence is not always possible, since the VdS classes additionally take account of security classes for domestic and commercial risks. Choosing the right VdS class is not a trivial decision, but requires a detailed risk analysis and precise knowledge of insurance-related requirements. Independent planning is essential here, to ensure an optimal, future-proof solution that is neither over- nor under-dimensioned.

VdS class A: basic protection for low risks

VdS class A represents basic protection within the VdS classification for intrusion detection systems. Systems in this class offer simple protection against attempts to overcome them, both when armed and disarmed. The detectors have a medium response sensitivity. Typical areas of application for VdS class A EMAs are households with a low proportion of valuables or smaller commercial properties where the risk of a break-in is classified as low. Examples include small offices without valuable goods, private flats or single-family homes with standard fittings. The requirements of VdS class A essentially correspond to the requirements of DIN VDE 0833-3 for Grade 2, supplemented by VdS-specific criteria. Although this is basic protection, these systems must also meet certain quality standards, to minimise false alarms and ensure basic reliability. Professional planning and installation by a VdS-recognised installer is also crucial for class A systems, to achieve full protective effect and secure recognition by insurers. PLANATEL® helps you assess whether VdS class A is sufficient for your specific risk and which components are optimally suited for this.

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VdS class B: increased protection for medium risks

Intrusion detection systems of VdS class B offer medium protection against attempts to overcome them when armed and disarmed, with the detectors likewise having a medium response sensitivity. This class is designed for properties with an increased risk or a higher proportion of valuables, and is used in both private and commercial settings. In the private sector, this covers households with an increased proportion of valuables (security classes SH1-SH3), while in the commercial sector it covers properties with simple and increased hazard levels (security classes SG1 and SG2). Examples include doctors' surgeries, smaller retail shops, office and administrative buildings with sensitive areas, or private collections. VdS class B meets the essential requirements of DIN VDE 0833-3 for Grade 3 and includes additional VdS-specific requirements that go beyond the standard. This guarantees more robust protection and greater resistance to more professional burglary attempts. Planning a VdS class B system requires a precise analysis of potential weak points and careful selection of detectors and monitoring technologies, to guarantee effective protection while avoiding unnecessary costs. PLANATEL® advises you on a manufacturer-independent basis when designing such systems.

VdS class C: maximum protection for high-risk areas

VdS class C represents the highest level of protection for intrusion detection systems and is intended for properties with very high risk and particularly valuable goods. Systems in this class have increased protection against attempts to overcome them and are characterised by increased response sensitivity of the detectors. Extensive monitoring of all safety-relevant functions is also present. This also includes protection against manipulation and sabotage of the system itself. Typical areas of application for VdS class C EMAs are jewellers, banks, museums, data centres, high-security laboratories, warehouses with high-value goods or critical infrastructure. For commercial risks, VdS class C covers security classes SG3 to SG6. The requirements for VdS class C systems correspond to the essential requirements of DIN VDE 0833-3 for Grade 4 and go beyond this with additional VdS-specific criteria. This means that not only the components themselves must meet the highest standards, but also the entire system architecture, cabling and alarm transmission. Redundant transmission paths to the emergency and service control room (NSL) are often required for class C systems, to prevent a failure of the alerting function. Planning a VdS class C system is highly complex and requires specialist expertise, to take account of all aspects of security and legal compliance. PLANATEL® offers the necessary expertise for this.

Choosing the right VdS class: a strategic decision

Choosing the right VdS class for an intrusion detection system is a strategic decision that goes far beyond mere technology. It must be based on a comprehensive risk and threat analysis that takes into account both the type and value of the objects to be protected and the potential dangers and specific conditions of the site. Factors such as the insured value, the type of business operation in accordance with VdS 2559, and the insurer's requirements play a decisive role in classification into the corresponding security class and thus the VdS class. Incorrect classification can have serious consequences: an under-dimensioned system does not offer sufficient protection and can lead to problems with the insurance payout in the event of a claim. An over-dimensioned system, on the other hand, causes unnecessarily high investment and operating costs. The aim is to find the optimal balance between protection needs, costs and legal compliance. It is important here not only to consider current requirements, but also to anticipate future developments and potential extensions to the system. Forward-looking planning avoids costly retrofitting and guarantees long-term security. PLANATEL® supports you in this complex decision-making process through an independent, well-founded needs analysis.

Planning and implementing legally compliant EMA systems with PLANATEL®

Planning and implementing an intrusion detection system that meets the VdS classes and statutory requirements is a complex undertaking that requires specialist expertise. PLANATEL® acts here as your independent planning and consulting provider. Our process begins with a detailed as-is survey and needs analysis, in which we determine your property's protection requirements together with you and carry out a comprehensive risk analysis. Based on this, we develop a target concept that establishes the optimal VdS class and suitable technical components. We prepare manufacturer-independent detailed planning that takes account of all relevant VdS guidelines (e.g. VdS 2311) and standards (e.g. DIN VDE 0833-3). A central part of our service is the preparation of transparent tender documents and support during the award process. We select certified installers for you who can guarantee proper installation in line with VdS requirements. Through our independent position, we ensure you receive the technically best and most economical solution, free from manufacturer dependency or commission interests. We accompany the implementation, carry out acceptances and check invoices, to ensure the quality and legal compliance of the entire system. With over 34 years of experience in planning security systems, PLANATEL® is your competent partner for legally compliant, future-proof EMA solutions.

Avoiding common mistakes and pitfalls in EMA planning

Mistakes that can significantly impair the effectiveness of the system frequently occur when planning and implementing intrusion detection systems. One of the most serious pitfalls is underestimating the actual risk, leading to the selection of an inadequate VdS class. This can not only jeopardise protection, but also lead to problems with the insurer in the event of a claim. Another common mistake is missing or inadequate independent planning. If planning is carried out directly by an installer or manufacturer, there is a risk of manufacturer dependency, which can lead to overpriced solutions that are not optimally tailored to needs. Neglecting the future-proofing and scalability of the system is also a problem. Companies grow and develop, and an EMA should be able to adapt to these changes without requiring a complete new installation. Poor documentation, inadequate maintenance concepts or ignoring transitional periods for standard changes are further aspects that can jeopardise the legal compliance and functionality of an EMA in the long term. PLANATEL® helps you recognise and avoid these pitfalls. Through our manufacturer-independent expertise and comprehensive experience, we ensure your EMA planning is solid, legally compliant and future-proof from the outset, and that you make the best possible investment in the security of your company.

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Frequently Asked Questions

What role does DIN VDE 0833-3 play in connection with VdS classes?

DIN VDE 0833-3 defines general requirements for intrusion and hold-up alarm systems in four grades. VdS classes A, B and C meet the essential requirements of the corresponding DIN grades (Grade 2 for class A, Grade 3 for class B, Grade 4 for class C). However, the VdS guidelines often go beyond the DIN standard and contain additional, field-proven and insurance-related requirements. A direct equivalence is therefore not always possible, but the VdS classes ensure that the DIN requirements are met or exceeded.

How does VdS classification influence the cost of an intrusion detection system?

VdS classification has a direct influence on the cost of an EMA. Higher VdS classes (e.g. class C) require more complex technologies, more robust components, increased monitoring of system functions and often redundant transmission paths. This leads to higher material and installation costs. In addition, the requirements for planning, design and the installer are stricter for higher classes, which also affects costs. Independent planning by PLANATEL® helps choose the optimal class and avoid unnecessary expenditure through over-dimensioning, while guaranteeing the required security.

What are security classes and how do they relate to the VdS classes?

In addition to VdS classes A, B and C, VdS guideline 2311 also includes twelve security classes, which enable a finer differentiation of protection needs. These security classes (e.g. SH1-SH3 for households, SG1-SG6 for commercial premises) are determined based on the insured value and the type of business operation in accordance with VdS 2559. They specify which VdS class is required for a particular risk. For example, commercial risks of security classes SG3 to SG6 may require an EMA of VdS class C. The security classes are thus an instrument for precisely matching the protection level to the specific risk potential.

Why is manufacturer-independent planning so important for EMA?

Manufacturer-independent planning is crucial to obtaining the best possible intrusion detection system for your specific needs. Without ties to a manufacturer, PLANATEL® can objectively evaluate the products and technologies available on the market and select the components that are optimally matched to your protection concept. This prevents manufacturer dependency, optimises costs, and ensures the solution is determined solely by technical suitability and cost-efficiency rather than sales interests. It also guarantees greater flexibility for future extensions or adaptations to the system.

What advantages does working with PLANATEL® offer when planning EMA?

PLANATEL®, as an independent planning and consulting company, offers over 34 years of experience in designing security systems. We guarantee manufacturer-independent consulting oriented exclusively towards your requirements and the applicable VdS guidelines and standards. Our expertise covers detailed needs analysis, the preparation of legally compliant planning documents, support with tenders, and the selection of certified installers. This secures not only an optimal technical solution and cost-efficiency, but also minimises risks such as planning errors, manufacturer dependency and problems with insurers, allowing you to make a future-proof investment.

What is the difference between VdS class B and C for intrusion detection systems?

VdS class B offers medium protection against attempts to overcome the system and is suitable for properties with an increased proportion of valuables or medium risk. VdS class C, on the other hand, represents the highest level of protection, with increased resistance to attack, higher response sensitivity of the detectors and comprehensive functional monitoring, ideal for high-risk areas such as banks or jewellers.

Which VdS guideline is relevant for intrusion detection systems?

The central VdS guideline for intrusion detection systems (EMA) is VdS 2311 "Guidelines for intrusion detection systems - planning and installation". It defines the minimum requirements for the planning, installation, operation and maintenance of EMAs of classes A, B and C and is decisive for VdS certification and insurance recognition.

Must an intrusion detection system be VdS-certified?

VdS certification is not always a statutory requirement, but is often made a condition by insurers for commercial properties or high values. It guarantees a high level of quality, reliability and legal compliance for the system and can lead to better insurance premiums.

How often should a VdS EMA be maintained?

VdS 2311 stipulates that VdS-recognised intrusion detection systems must be regularly maintained. This includes at least annual maintenance and inspection by a VdS-recognised installer, to ensure the permanent function and legal compliance of the system.

Sources and further information