Pfannenberg PRO L 10-Ex LED Sounder Beacon

The Pfannenberg PRO L 10-Ex is a high-performance combined LED sounder beacon designed for use in dangerous and potentially explosive environments. Featuring a robust cast aluminium housing and delivering sound levels of up to 116 dB(A), the unit provides reliable audible and visual warning in demanding industrial applications where durability, visibility, and compliance are critical.

Designed for operation in ATEX Zone 2 (3G), Zone 22 (3D), and Class I, II, and III Division 2 hazardous areas, the PRO L 10-Ex combines explosion proof protection with flexible signalling options. Users can select between continuous, blinking, or flashing light modes, while the integrated sounder offers up to 80 options for alarm tones with an additional three externally selectable tones to suit a wide range of alarm requirements.

The device also allows users to adjust the sound output by up to 30 dB, either internally or externally. A built-in pre-alarm and main alarm function helps reduce shock reactions by sounding a lower-volume warning before activating the full alarm level.

Key Features

• Combined LED beacon and sounder
• Sound output up to 116 dB(A)
• Explosion-proof design for hazardous areas
• Approved for Zone 2 (3G) and Zone 22 (3D) applications
• Suitable for Class I, II and III Division 2 environments
• Robust cast aluminium housing
• Continuous, blinking, or flashing light modes
• 80 options for alarm tones
• 3 additional externally selectable tones
• Adjustable sound pressure level
• Sound reduction up to 30 dB
• Pre-alarm and main alarm functionality
• Designed for fast installation and wiring
• Unlosable seals and screws for easier maintenance

Typical Applications

The Pfannenberg PRO L 10-Ex is fitting for:

• Oil and gas facilities
• Petrochemical plants
• Offshore platforms
• Chemical processing facilities
• Refineries
• Fuel storage terminals
• Industrial manufacturing plants
• Hazardous-area process environments
• Warehouses handling flammable materials