Klaxon Nexus 120 DC Sounder & Sounder-Beacon

Product Overview

The Klaxon Nexus 120 DC Sounder and Sounder-Beacon is a signaling device designed for fire alarm systems and other signaling applications. It offers a variety of tones and can be configured with different flash patterns for visual alerts.

Key Features and Specifications

• Tone Selection: Independently selectable tones for first and second stages, with a pre-set third stage tone.
• Volume Control: Adjustable volume with up to 20dBA reduction.
• Beacon Flash Control: Configurable flash modes (single flash, double flash, static) for LED and Xenon beacons.
• Power Supply: 10-60V DC.
• Current Consumption: Varies based on tone and beacon type (e.g., 0.12-0.55A for sounder, 18mA flashing/65mA static for LED beacon).
• Sound Level: Up to 110-120 dBA at 1 meter.
• Number of Tones: 64 distinct tones available.
• Operating Temperature: -25°C to +70°C.
• Enclosure: High Impact Polycarbonate/ABS.
• IP Rating: IP66.
• Synchronization: Automatic synchronization with Klaxon Nexus and Sonos sounders.
• Certifications: EN54-3 certified for specific tones.

Installation Guide

Mounting:

1. Mount the base unit and make external wiring connections.
2. Attach the head unit to the base; it will connect automatically.
3. To detach the head from the base, unlock the four 1/4-turn fasteners.
4. Ensure correct orientation of the head unit, especially if a beacon is fitted.

Wiring:

The sounder and beacon have separate wiring terminals, allowing for daisy-chain connections. Terminals are marked for positive and negative supply, and for 2nd and 3rd stage alarm control (connect to 0V to activate).

Controls:

• Tone Selection: Use 6-way DIP switches (S1 and S2) to select tones. Refer to the tone table for specific settings.
• Volume Control: Adjust the potentiometer to reduce sound output.
• Beacon Flash Control: Use the 2-way DIP switch to alter the flash mode.

Technical Specifications Summary

The Nexus 120 DC series offers a voltage range of 10-60V DC. Sounder current draw is typically 0.5A at 24V for Tone 2. Xenon beacon current is 350mA peak at 24V DC (60 flashes/min), and LED beacon current is 18mA (flashing) or 65mA (static). The sound level can reach 110-120 dBA at 1m. The device supports up to 64 tones and operates within a temperature range of -25°C to +70°C. It features an IP66 rating for environmental protection.

Environmental Considerations

This product complies with the European directive on Waste Electrical and Electronic Equipment (WEEE). Users should return end-of-life equipment for proper disposal to minimize environmental impact. More information can be found at http://www.recyclethis.info/.