Industrial Air Horn Siren
A compressed air-powered horn siren producing loud acoustic signals exceeding 120 dB for industrial sites and emergency warnings. Classified under HTS 8531.80.90.41 as other sound signaling apparatus, distinct from vehicle horns or basic bells. Used for safety alerts in factories and construction zones.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed for motor vehicle installation
Vehicle horns fall under heading 8512 for electrical lighting/signaling equipment of vehicles.
If functioning primarily as a basic bell or buzzer
Simple bells, buzzers, and similar basic sound devices are specifically covered in 8531.80.10.
If classified by pneumatic power mechanism rather than signaling function
Air-powered horns without primary signaling purpose may go under engines and motors.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify sound pressure level (SPL) certification to confirm classification as signaling apparatus, not musical instruments
• Include safety compliance docs like UL or CE for industrial use to avoid reclassification
• Check for piezo vs air-powered to distinguish from simpler buzzers under 8531.80.10
Related Products under HTS 8531.80.90.41
Mining Emergency Hooter
Explosion-proof siren approved for underground mining evacuation and machinery stoppage. HTS 8531.80.90.41 classification for hazardous location sound signaling. MSHA certified.
Factory Warning Klaxon
Multi-tone electro-mechanical klaxon horn for factory shift changes, danger warnings, and evacuation signals. Meets HTS 8531.80.90.41 as other sound signaling apparatus beyond basic bells. Typically 105-115 dB output for large indoor spaces.
Marine Fog Horn Signal
Electric fog horn compliant with SOLAS regulations for vessel collision avoidance signaling. HTS 8531.80.90.41 covers this as other sound signaling apparatus for maritime safety. Automated timer and remote activation standard.
Emergency Evacuation Siren
High-decibel wall-mount siren for building evacuation during fires or disasters, synchronized with alarm panels. Fits HTS 8531.80.90.41 as specialized sound signaling beyond basic bells. Voice evacuation capable models available.
Railway Trackside Warning Horn
Stationary compressed air horn for railway level crossing and track worker warnings. HTS 8531.80.90.41 classification for rail-specific sound signaling apparatus. Meets AREMA standards for North American rail.
Backup Alarm for Construction Equipment
Reverse motion alarm producing 97-112 dB tonal signal for heavy equipment blind spots. HTS 8531.80.90.41 as other sound signaling for industrial safety. White noise broadband models available.