Explosion Proof Industrial Aluminium Emergency Fire Warning Horn Beacon Siren Sounder Alarm. Explosion-Proof Certification: Classified Exd II CT6 for safe use in hazardous environments like petrochemical plants. High Sound Pressure Output: Delivers up to 120dB sound pressure for clear audio signals over 300-400 meters. Durable Aluminum Housing: Constructed with die-cast aluminum and SUS316L for excellent anti-corrosion and durability. Multiple Alarm Tones: Features 12 selectable tones including Fire, Security, Marine Horn, and Motor Siren. Flexible Voltage Options: Supports DC12V, DC24V, AC110V, AC220V, and AC380V for versatile power integration. Remote Control Capability: External control available via push buttons or relay switches for remote triggering. IP66 Protection Rating: Dust-tight and protected against powerful water jets for reliable outdoor operation. Customization Services: Offers OEM, ODM, and flexible customization from samples or designs.