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PA system upgrade offers greater flexibility

Bosch Security Systems’ Praesideo Version 3.0 digital public address and emergency sound system includes new additional hardware such as an updated network controller, a multi channel interface and basic amplifiers. These new devices will further enhance the product’s position in this competitive market by giving customers more flexibility in design and a more optimal and cost-effective solution. Praesideo is therefore ideal for medium to large applications.

The updated network controller is equipped with a more powerful processor for even faster system response within very large systems. It also includes a 48 V DC battery backup input. The multi channel interface is connected to the Praesideo optical system bus and acts as the interface to the system’s basic amplifiers. It enables supervision of the unit itself and of the connected basic amplifiers, and also controls spare amplifier switching.

The new basic amplifiers are rated 2 x 250 W and 1 x 500 W. They are high efficiency class-D amplifiers with built-in output transformers to drive 100 V and 70 V loudspeakers. They offer an analog audio line input for connection to the multi channel interface as well as an additional analog line input for low priority local audio.

Praesideo Version 3.0 has been independently TÜV tested to EN/IEC60849 certification for “sound systems for emergency purposes”. This means Bosch can assure not just installers but also fire departments, consultants/specifiers and end-users that the EVAC systems they are using comply with the strictest requirements of the EN60849 standard for public buildings.


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