MEDC DB3 Industrial Explosion-Proof Alarm Sounder

Overview

The MEDC DB3 Alarm Sounder is a rugged audible signaling unit designed to provide clear, loud, and reliable alarm notification in harsh industrial environments, including petrochemical plants, oil & gas installations, offshore platforms, refineries, chemical processing facilities, and other hazardous areas. Built with explosion-proof construction and high ingress protection, this sounder meets stringent safety standards for use in Zone 1 and Zone 2 hazardous locations. 

Key Features & Capabilities

• Explosion-Proof Design: Certified for use in hazardous gas and dust atmospheres (ATEX/IECEx/UL), making it suitable for dangerous industrial zones where flammable mixtures may be present. 

• High Sound Output: Generates powerful audible alerts of up to ~122 dB @ 1 m, ensuring that alarm signals are clearly heard even in noisy environments. 

• Selectable Tones: Offers multiple user-selectable tones (typically 28 tones) with volume control to match specific alarm requirements or local standards. 

• Wide Temperature Performance: Designed to operate reliably over a broad temperature range (from about −55 °C to +85 °C), suitable for extreme environments. 

• Robust Construction: Ex enclosure made from UV-stable, flame-resistant glass-reinforced polyester with corrosion-resistant hardware, ensuring durability and long service life. 

• Voltage Options: Available for DC and AC supply ranges (typically 12 V–48 V DC or up to 254 V AC) for flexible integration into control and alarm systems. 

• Control Compatibility: Designed for PLC and alarm panel integration with options for selectable stages or remote control switching. 

Industrial & Safety Applications

The MEDC DB3 sounder is widely used in scenarios where audible alerts are critical for worker safety and process awareness:

• Hazardous industrial areas (Zone 1, Zone 2) such as chemical and petrochemical plants. 

• Oil & gas facilities and offshore platforms requiring explosion-proof alarm signaling. 

• Fire alarm and emergency signaling systems integrated with safety PLCs. 

• General alarm and warning applications in manufacturing, utilities, and heavy industry. 

With its high SPL, selectable tones, and rugged explosion-proof certification, the DB3 sounder ensures dependable audible signaling even in the harshest industrial environments. 

FAQ

What is the MEDC DB3 Alarm Sounder used for?

It’s used to generate loud, clear audible alarms in hazardous and industrial environments, alerting personnel to emergencies, faults, or safety conditions. 

Is this sounder explosion-proof?

Yes — the DB3 sounder is designed with explosion-proof construction and certified for hazardous gas/dust environments under ATEX and IECEx standards. 

Does it work on different voltages?

Yes — versions exist for DC and AC supply systems (e.g., 12 V–48 V DC or 110–254 V AC). 

How loud is the alarm?

The MEDC DB3 can produce up to approximately 122 dB at 1 m, making it suitable for loud alarm requirements. 

Call to Action

Request a quote or product inquiry for the MEDC DB3 Alarm Sounder and ensure robust, certified audible alerting for your industrial safety systems.