Description The Bosch PRS-NCO3 Network Controller is a centralized control and routing unit designed for Praesideo public address and emergency sound systems. It manages up to 28 simultaneous audio channels while providing system supervision, fault monitoring, and message management for complex voice evacuation applications. The controller supports advanced audio processing, redundant network architecture, and EN 54-16 certified emergency communication functionality. Technical Specifications Condition New/Never Used Surplus Brand Bosch Category Public Address Systems Part Number PRS-NCO3 Subcategory Network Controllers System Compatibility Bosch Praesideo Systems Audio Channels Up to 28 simultaneous channels Network Nodes Supported Up to 60 nodes Audio Inputs 2 Mic/Line Inputs, 2 Line Inputs Audio Outputs 4 Analog Line Outputs Control Inputs 8 Programmable Inputs Control Outputs 5 Programmable Outputs Communication Interfaces Ethernet, RS232 Frequency Response 20 Hz to 20 kHz (-3 dB) Battery Backup Input 48 VDC Mains Power Supply 115/230 VAC ±10%, 50/60 Hz Power Consumption 21 W Idle / 160 W Maximum Mounting Type Standalone or 19-inch Rack Mount Dimensions 88 x 483 x 400 mm Operating Temperature -5°C to +55°C Certifications EN 54-16, ISO 7240-16, IEC 60945 Weight 7 kg Information About PRS-NCO3 The PRS-NCO3 is a network-based controller developed for Bosch Praesideo digital public address and voice alarm systems. It features integrated audio routing, DSP processing, event scheduling, fault supervision, and digital message storage within a single 2RU rack-mount platform. The unit supports up to 60 network nodes including amplifiers, call stations, and audio expanders, while offering Ethernet connectivity for configuration, diagnostics, and system logging. Designed for mission-critical environments, the controller includes redundant network support, monitored audio paths, battery backup operation, and compliance with EN 54-16 and ISO 7240-16 emergency system standards. Key Features: Multi-Channel Audio Routing: Supports routing and management of up to 28 simultaneous audio channels. Integrated Message Storage: Built-in compact flash memory supports monitored WAV file playback with four simultaneous messages. Emergency System Compliance: Certified to EN 54-16 and ISO 7240-16 standards for voice evacuation systems. Redundant Network Capability: Supports loop and branched network topologies for increased operational reliability. Advanced Audio Processing: Includes parametric EQ, limiter, gain control, and monitoring functions. Flexible Connectivity: Features microphone, line inputs, line outputs, Ethernet, RS232, and programmable control I/O. System Fault Supervision: Continuously monitors microphones, loudspeaker lines, control inputs, and connected devices. Backup Power Support: Operates from both AC mains and 48 VDC battery backup with automatic switchover. The PRS-NCO3 delivers the reliability and precision required for professional public address, voice evacuation, and emergency communication systems.
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