Hand Crank Siren Horn, Emergency Safety Manual Siren, Aluminium Alloy Portable Hand Held Siren Horns Alarm 110db Loud Adjutsable Volume, for Factories Homes Schools Oil Depots

[Hand Crank Siren Horn] The hand crank siren horn is manually operated, requiring no power source, providing timely warnings in areas without electricity, suitable for emergencies.
[Adjustable Volume] The volume can be adjusted, determined by the crank speed, the the crank, the louder the sound. Press trigger to open blade and emit loud sound.
[High Performance] The volume can achieve 110 dB and the sound transfer diameter is up to 0.62 miles. Its sharply, penetrating sound ensures effective warning effect.
[Aluminum Alloy Housing] The hand crank siren adopts aluminum alloy housing with anti rusty coating, more sturdy, offering reliability in various environments.
[Versatile Applications] The manual operated siren horn is widely used in factories, homes, schools, oil depots, warehouses, and more, provides timely warnings in emergencies.