AUNMAS Hand Crank Siren Horn, Portable Loud Manual Siren with Adjustable Volume up to 120dB, for Emergency Safety Sporting Events Flood Control and Disaster Relief

[No Electricity Needed] This hand crank siren operates entirely manually requiring no batteries or external power source making it the perfect emergency alarm for remote locations power outages and unpredictable situations. its compact and lightweight design ensures easy portability allowing you to carry it anywhere for instant alert signaling. [Versatile Mounting & Storage] Designed for convenience this siren can be mounted on rail brackets for hands free operation or inverted for compact storage. its wide applicability spans schools factories warehouses oil depots and public safety scenarios helping minimize risks during natural disasters and emergencies. [Adjustable Volume Control] The sound intensity of this manual siren can be precisely controlled by the rotation speed of the handle with ​ cranking producing louder alerts up to 120db. the built in mechanism​ further amplifies the sound by opening the blades delivering an even more powerful warning ​ for critical situations. [Durable & Weatherproof Construction] Crafted from heavy duty aluminum alloy with a protective paint coating this siren withstands harsh conditions including rain dust and impact. the rugged design guarantees long term reliability whether used in industrial settings outdoor adventures or emergency preparedness kits. [Extremely Loud & ​] Engineered to produce ear piercing sound levels of 120±2db this siren can be heard from over 1.24 miles away ensuring maximum coverage in emergencies. its ​ 600hz ​ cuts through background noise making it ideal for disaster relief flood control and large area evacuations. Spec: Item Type: Hand Crank Siren Horn Effective Range: Diameter ≥ Approx. 2000m / 6561.68ft Sound Level: 120±2dB Sound Frequency: 600±20Hz (Depending on crank speed) Rated Speed: ≥2000 r/min Main Material: Aluminum Alloy Crank Direction: Clockwise Application: Engineering, School, Flood Control, Nature Disasters and Other Emergency

• [No Electricity Needed] This hand crank siren operates entirely manually requiring no batteries or external power source making it the perfect emergency alarm for remote locations power outages and unpredictable situations. its compact and lightweight design ensures easy portability allowing you to carry it anywhere for instant alert signaling.
• [Versatile Mounting & Storage] Designed for convenience this siren can be mounted on rail brackets for hands free operation or inverted for compact storage. its wide applicability spans schools factories warehouses oil depots and public safety scenarios helping minimize risks during natural disasters and emergencies.
• [Adjustable Volume Control] The sound intensity of this manual siren can be precisely controlled by the rotation speed of the handle with cranking producing louder alerts up to 120db. the built in mechanism further amplifies the sound by opening the blades delivering an even more powerful warning for critical situations.
• [Durable & Weatherproof Construction] Crafted from heavy duty aluminum alloy with a protective paint coating this siren withstands harsh conditions including rain dust and impact. the rugged design guarantees long term reliability whether used in industrial settings outdoor adventures or emergency preparedness kits.
• [Extremely Loud & ] Engineered to produce ear piercing sound levels of 120±2db this siren can be heard from over 1.24 miles away ensuring maximum coverage in emergencies. its 600hz cuts through background noise making it ideal for disaster relief flood control and large area evacuations.