FDA221/241 (ASD) and FDA222/242, FDA261/262 (ASD+)

Air-sampling systems with dual-wavelength optical detection for very early smoke detection in large or critical areas.

Technical Specifications

ASD (FDA221/241) sensitivity	0.05…20 %/m
ASD+ (FDA222/242, FDA261/262) sensitivity	0.003…20 %/m
ASD coverage area	up to 800 m²
ASD+ coverage area	up to 3600 m² per detector (up to 6700 m² total)
ASD+ alarm thresholds	individual, modular design
ASD+ tools	mobile app + PC software, QR commissioning

Key Features

• Dual-wavelength optical detection — distinguishes smoke from dust and steam
• ASD+ — modular component replacement, up to 75% lower power consumption than the previous generation
• Integration with the panel via FDnet, no I/O card required (ASD+)

Applications