Inner intrusion systems for housing and business

Effective protection within your home or business by intelligent sensors that detect any unauthorized access, with immediate warning and professional response.

What are internal intrusion systems?

Internal intrusion systems are an effective solution for detecting unauthorized access once the intruder is inside the property.
Professional theft takes place in minutes.
Our goal is detect before, activate before and force abandonment.

That's why we combine:

  • Active retention in accesses

  • Internal volumetric detection

  • Complementary technical sensors

  • Protection of doors and windows

Modern and bright living room with integrated interior intrusion sensor, example of discreet internal security system for home on the Costa del Sol.

Active Retention: prevent opening before they enter

Active retention is an early protection system that acts directly on doors and windows.
This is a high sensitivity membrane installed in the lock (doors) or frame (windows) which detects vibrations, attempts to force or manipulation.
At the minimum attack signal, the system activates the alarm immediately, before the intruder gets access to the inside.
This completely changes the scene of the robbery: we do not detect when they are already inside, but when they try to enter.

Protected interior

Our internal intrusion systems protect the inside of your property by strategically located sensors, including door and window opening detectors and vibration sensors capable of identifying handling attempts.

These systems detect suspicious movements or sabotage attempts and act even if an intruder can overcome external protection.

 

Each facility is designed using an advanced analysis of criminal behaviour, which allows us to create systems that deter, detect and force the abandonment of the intrusion attempt, ensuring comprehensive and effective protection.

Image 1

PIR motion sensors

Indoor volumetric detectors,
Also known as PIR motion sensors, they detect the presence of people by capturing the infrared energy emitted by the human body.

We work with different types of sensors,
combining discrete aesthetics with advanced technologies, including photo detectors, anti-masking sensors and double-tech systems, capable of detecting attempts at manipulation, sabotage or intrusion even under conditions
complex, ensuring maximum reliability and minimum false alarm.


40dd0bc5 24a9 4106 b8fb e9ab5f4f6ce4

Impact detectors

Impact detectors protect doors, windows
and other accesses in front of blows, vibrations and manipulations.

Its discrete and customizable design allows for elegant integration without compromising aesthetics, offering high-security interior protection.

In addition, these devices can be easily integrated with alarm and security control systems, generating immediate warnings in the face of any manipulation attempt.

In this way, they provide an additional layer of internal protection that allows early detection of risk and rapid action, strengthening global security of ownership.



Screenshot 2026 03 13

Wireless magnetic contacts and wired magnetic contacts

Magnetic contacts are key elements in the protection of doors and windows, as they allow to detect
Unauthorised openings and to strengthen perimeter safety.

These devices can be installed wireless or wired. The latter are recommended when the housing is still in
works, or surface, adapting to structures already finished.

Thanks to its high reliability and accuracy, magnetic contacts guarantee an immediate detection of any attempt to
handling, integrating discreetly with the rest of the safety systems to provide comprehensive and high-efficiency protection.

Infrared detectors

Infrared door and window barriers

The infrared barriers to doors and windows are an ideal solution to protect access without limiting the normal use of space.

This type of detector allows to set up the security system with open doors and windowsespecially useful in housing and business with frequent passing areas.

The system is made up of a transmitter barrier and another receiver that creates an invisible infrared beam. Any interruption of the beam activates the alarm immediately.

Its versatile design allows installation both inside and outside, providing effective and discreet protection at critical access points.

Screenshot 2026 04 13

Safety sheets for windows

The 3M Scotchfield ™ Ultra S800 safety sheets están diseñadas para reforzar el vidrio y aumentar la protección tanto de personas como de bienes.


Increased safety against breakages

One of its main advantages is that, in case of impact or breakage of the glass, the sheet keeps the fragments together, preventing them from getting fired. This significantly reduces the risk of injury and material damage.


Protection from theft and vandalism

Thanks to its high resistance to tear and multi-layer structure, it makes it difficult to open gaps in the glass. This delays or dissuades attempts at intrusion, improving security in homes, offices or shops.


High resistance to extreme impacts

These sheets are prepared to withstand demanding situations such as heavy blows, explosions, natural disasters or vandals, offering a higher performance than standard sheets.

UV blockage (up to 99.9%)
They filter almost all ultraviolet rays, which helps:
• Protect the skin
• Avoid discoloration of furniture, floors and fabrics
• Alarm the service life of the interior

High transparency and aesthetics
Despite their resistance, they are virtually invisible once installed, maintaining the clarity of the glass without affecting the entry of natural light.

Structural reinforcement of glass
They increase the resistance of the glazing to pressure and impacts thanks to its great capacity for elongation and traction, strengthening the system as a whole.

Durability and easy maintenance
They have a scratch-resistant coating that maintains its appearance over time and facilitates smooth cleaning.

Security certificates
They meet international standards of impact (EN 12600, EN 356) and fire resistance (Class A), making them suitable for demanding environments.

Inner detection types we install

01.

Magnetic contacts

They detect the opening of doors and windows when the magnet is separated from the sensor. They act as a first level of perimetral protection, activating the alarm against unauthorized access.

02.

Photodetectors

They detect movement within a space by infrared sensors and capture images when the alarm is activated, allowing visual verification of an intrusion. They are a key support to confirm events within the security system.

03.

Incorporated sensors

Small motion sensors integrated into walls or frames, almost invisible, ideal for high-level aesthetic projects.

04.

Smoke sensors

Integrated into the alarm system to detect fires and activate immediate warnings.

05.

Flood probes

They detect water presence in critical areas (kitchens, bathrooms, technical rooms) avoiding serious structural damage.

06.

Technical sensors

They are auxiliary sensors such as: gas sensors, temperature sensors, sabotage sensors...

Protect the interior of your home or business with a reliable and professional intrusion system.

Contact Marbejer and we will advise you without commitment to design the solution that best suits your needs.

Scroll at the start