SORHEA has developed a complete range of infrared detectors to protect against intrusion, allowing professionals to offer their clients security optimized in terms of budget and risk protection. The elements to take into consideration are the power of deterrence and the power of detection of the infrared barriers.

The power of deterrence serves mainly to differentiate modular products from column-based products.
It determines the psychological impact represented by a uniform column compared to that of modular products.
In effect, with modular products, it is easy to determine the position of the infrared detection beams, making it easy to pass over or below the modules. With column-based products, it is impossible to locate the position of the infrared cells and the beams and thereby avoid them.

Modular product
An intruder can
easily pass above
or underneath
the infrared beams

Column-based product
An intruder has no way
to know where the infrared
beams are located

Detection performance is determined by the relationship between the height of the detection zone and the height of the corresponding column.

The height of detection is represented by the spacing between the 2 adjacent detection beams. This height should never be greater than 40 cm, because beyond that it becomes easy for someone to slip between the two beams without being detected.

For the height of the column, we consider the useable height as the zone represented by the location of the cells. For technical reasons, this height corresponds to the height of the column minus several centimeters at the top and the bottom of the column (thus, 180 cm for a 190 cm column).

The greater the correspondence between the detection zone and the height of the column, the greater the possibility for detection.

In the case of a BIRIS Column :

Height of the detection zone of a BIRIS barrier = 40 cm

Height of the location zone of the location of the cells on a 1.90 m column = 180 cm 

Detection performance = 40/180 = 0.22 i.e., 22%

Multiplying the beams increases the density of the infrared wall by bringing the beams closer together. Doing so diminishes the height of each detection zone, thereby increasing the number of beams interrupted by the passage of an intruder.

Such redundancy is used in particular on high risk sites with the MAXIRIS 2000 Double Stack.

To prevent assaults against people in their homes. This means alerting the residents that an intruder is approaching the house.

To be able to sleep with the windows open without risk. It is very common for intruders to enter a house at night through the windows. Infrared barriers installed on facades monitor and immediately provide alarms in the event of intrusions.

To replace human guards. When a perimeter surveillance installation is under consideration to replace a human guard, long-term effectiveness and profitability are strong arguments in favor of such replacement: the surveillance equipment is more quickly amortized and the cost is less compared to the presence of a guard.

To satisfy the demands of insurers. More and more frequently, insurance companies tie the premium of an insurance policy for inventory to the existence of an exterior detection system.

Each infrared barrier has a thermostat-controlled heater integrated on each cell. The heater prevents damage from extreme weather conditions.

Condensation and morning dew, humidity on the exterior of the column caused by high air temperature, and snow collecting on the caps are all important factors to take into consideration for effective exterior detection.

All of our products are equipped with thermostat-controlled heating to provide optimum performance.