Silent Knight EVS-50W Intelligent 50W Amplifier

The EVS-50W Intelligent 50-Watt Fire Alarm Voice Evacuation Amplifier is a professional emergency communication device designed to amplify and distribute voice evacuation messages throughout compatible fire alarm systems. Featuring 50 watts of audio output, four onboard speaker circuits, and integrated supervision, this amplifier supports reliable emergency announcements in commercial, institutional, and large-building environments.

Designed as a self-contained distributed amplifier, the EVS-50W can be installed near the area requiring emergency voice coverage. This distributed configuration helps reduce speaker wiring distances and provides flexibility when designing emergency communication systems across multiple areas.

Each EVS-50W delivers 50 watts of nominal audio output power. Up to four amplifiers can be incorporated into a compatible voice evacuation system, providing a combined nominal amplifier capacity of up to 200 watts.

The amplifier includes four integrated speaker circuits that can be expanded to eight through the addition of an optional EVS-CE4 audio circuit expansion module. This configuration allows the system to accommodate additional speaker circuits without requiring a separate amplifier for every circuit.

The EVS-50W features an integrated power supply with battery backup capability. Its supervised operation allows the compatible main fire alarm control panel to monitor supported amplifier trouble conditions, helping maintain system reliability during normal operation and emergency events.

Designed for compatibility with the 5820XL-EVS and 6820EVS fire alarm control panels, the EVS-50W integrates into supported emergency voice evacuation systems for coordinated audio notification.

The red enclosure supports surface-mounted or flush-mounted installation, offering convenient placement options in equipment rooms and other approved installation locations.

Ideal for commercial fire protection, emergency voice communication, and distributed evacuation systems, the EVS-50W provides a scalable solution for professionally designed fire alarm audio installations.

10 Key Features

1. 50-Watt Audio Output: Provides 50 watts of nominal audio amplification for compatible emergency voice evacuation systems.

2. Four Onboard Speaker Circuits: Includes four integrated audio circuits for distributing emergency messages.

3. Expandable to Eight Circuits: Supports an optional EVS-CE4 expansion module for additional speaker circuit connections.

4. Multi-Amplifier Support: Allows up to four EVS-50W amplifiers in a compatible voice evacuation system.

5. Distributed Amplifier Design: Can be positioned near protected areas to help reduce speaker wiring requirements.

6. Integrated Power Supply: Features a built-in power supply for supported emergency communication applications.

7. Battery Backup Capability: Supports backup power during loss of primary electrical service when properly configured.

8. Supervised Operation: Allows the main fire alarm control panel to monitor amplifier trouble conditions.

9. Flexible Mounting Options: Supports both surface-mounted and flush-mounted installation.

10. Fire Alarm System Integration: Designed for compatible 5820XL-EVS and 6820EVS voice evacuation control systems.