Bell DDA-EXT-4/VR 4 Station DDA Extended System

Bell DDA-EXT-4/VR 4-station surface audio system. Vandal-resistant and Equality Act compliant, it feature accessible call button for both standing and wheelchair user, ensuring inclusive entry control

Installers fix the high-grade 316 marine stainless steel panel to the building exterior using the provided surface-mounting enclosure. The extended design is specifically engineered for sites where a single mounting height cannot meet all accessibility requirements. The system connects to four internal audio handsets using standard 4+n wiring and a centralized power supply. During use, visitors are guided by high-visibility illuminated halo rings and audible reassurance tones, while visual LED indicators signal when the call is answered or the door is released. This installation is ideally suited for public housing, healthcare centers, and educational facilities where inclusive access is a priority.

Features

• Dual-Height Accessibility: The extended panel features call buttons positioned at multiple heights to provide easy reach for wheelchair users and standing visitors alike.
• High-Visibility Halos: Illuminated blue halo rings around each call button provide high-contrast visual cues to assist users with visual impairments in locating the controls.
• Visual Status Indicators: Integrated LED alerts for Call in Progress, Speak Now, and Door Open support hearing-impaired visitors throughout the entry process.
• Vandal Resistant Construction: Manufactured from 2.5 mm 316-grade stainless steel with IP68-rated buttons for maximum protection against corrosion and physical attack.