【Emergency Warning】Manual operation, no installation required, easy to carry. It can provide effective alarm in places without power support, and can be used for emergency warning at unexpected time.
【Volume Adjustable】The volume level depends on the speed of the handle cranking, the faster the speed, the louder the sound. In addition, press the trigger can open the vanes, and LOUD comes out.
【Loud Alarm】The volume can be up to 110db, the sound is sharp, strong penetration, can achieve the ideal alarm effect.
【Strong and Durable】Made of aluminum alloy with anti-rust paint outside, more strong and wear-resistant, anti-corrosion and waterproof, durable.
【Wide Application】Widely used in factories, homes, schools, oil depots, warehouses, flood control, disaster relief, public and industrial occasions, it can alarm in time in case of emergency to reduce casualties and property damage.
Specification:

Product name: Hand Crank Siren
Operation: Hand operated
Sound: Siren
Material: Aluminium alloy
Decibel: 110db
Size: Width: Approx. 4.52in Height: Approx. 9.44in
Weight: 2.5lb