Every new voice alarm system must undergo an initial inspection by an accredited organization, including measurements of the sound pressure level in each acoustic zone and of speech intelligibility (STIPA measurements).

As a result of the inspections and audit, you receive a conformity report stating that the system has been designed, installed, tested and used in accordance with the requirements of the Belgian standard series NBN S 21-111.

To ensure a high level of reliability and availability of the voice alarm system, on the one hand the components used must be certified in accordance with the applicable product standards and on the other hand the system must be designed, installed, tested and operated in accordance with the requirements of the Belgian standard series NBN S 21-111.

Each new voice alarm system must be subject to an initial inspection by an accredited organization, including measurements of the sound pressure level in each acoustic zone and of speech intelligibility (STIPA measurements).

Thereafter, the voice alarm systems should be checked periodically at least every 3 years.

Buildings with and without several floors, such as

• School, university / office building, factory building
• Airport, metro or railway station / car park / sports stadium, sports complex, swimming pool, event (hall) / shopping center, department store, retail space
• Prison, closed institution, ...
• Care sector
• Tourist accommodation, Hotel, etc ...
• Student house and apartment building