Edwards 3-ZA20A Zoned Audio Amplifier

The Edwards 3-ZA20A Zoned Amplifier is designed to deliver clear, intelligible emergency audio for life safety and mass notification systems. It supports digital paging, evacuation tones, and pre-recorded messages, ensuring reliable communication during critical events. Built with Class A/B (Style Z/Y) outputs, it provides robust performance for small to medium-scale fire and life safety applications.

Where It Can Be Used?

The 3-ZA20A amplifier is ideal for commercial complexes, industrial plants, hospitals, schools, and residential towers. It is particularly effective in environments where code-compliant voice evacuation and emergency communication are mandatory, including sleeping areas that require 520 Hz low-frequency signaling.

3-ZA20A Zoned Audio Amplifier
The 3-ZA20A is a 20 Watt Zoned Audio Amplifier that integrates seamlessly with Edwards EST4 control panels. It supports up to eight simultaneous digital audio channels and features a built-in speaker circuit configurable for 25 VRMS or 70 VRMS outputs. With local storage of pre-recorded messages and an integrated backup tone generator, it ensures continuous operation even during network failures. The amplifier also includes a 24 Vdc power-limited Notification Appliance Circuit (NAC) for visual signaling devices.

Advantages

• Compact 20W design for small to mid-size installations
• Simultaneous eight-channel digital audio for paging and evacuation
• Local storage of pre-recorded messages for reliability
• Integrated backup tone generator (1 KHz temporal tone)
• 24 Vdc NAC output for additional notification appliances
• Power-limited Class A or B wiring configurations
• UL 464/864 approved for sleeping areas with 520 Hz signaling

Areas We Serve

Fire Projects Pvt. Ltd. supplies, installs, and commissions the Edwards 3-ZA20A amplifier across Gujarat, including Ahmedabad, Vadodara, Surat, Rajkot, Sanand, Halol, Vapi, Ankleshwar, and Dahej. We cater to industries such as healthcare, petrochemicals, IT parks, commercial buildings, and large residential projects.

Why Choose Fire Projects Pvt. Ltd.?

We are trusted partners for Edwards fire and life safety systems, offering end-to-end solutions — from design, supply, and installation to annual maintenance. With a skilled team and deep expertise, we ensure your fire alarm systems meet the latest codes and deliver uncompromised reliability.

Contact us: +91 98244 42333 | Email: info@fireprojects.co.in