QWORK Hand Crank Siren Horn, Hand Loud Crank, Emergency Safety Manual Siren, Portable Hand Held Siren Horns Alarm, Green

Sturdy and Durable: Made of aluminum alloy, coated with anti-rust paint outside, more sturdy and wear-resistant, anti-corrosion and waterproof, easy to carry, durable for a long time.. Loud Alarm: The volume can reach 110db, the sound transmission diameter is 0.62 miles, the sound is sharp and penetrating, makes a lot of noise, quickly get people's attention, which can achieve the ideal alarm effect.. Emergency Warning: Necessary items for emergencies in any place, effective and timely early warning, reducing personnel property loss and casualties, manual operation, no installation required.. Volume Adjustable: The volume depends on the speed at which the handle is turned, the faster the speed, the louder the sound. In addition, press the trigger can open the vanes, and the loud will come out. No power support required, just shake the handle to power the handheld siren.. Wide Application: Widely used in factories, homes, schools, oil depots, warehouses, flood control, disaster relief, public and industrial occasions, it can call the police in time in an emergency, reducing casualties and property losses.