Descriptions:

This hand crank siren is easy to operate, simply activate the alarm by manually rotating the handle
without requiring additional external power or other equipment support
which is especially suitable for where there is no power support or unexpected situations of emergency alarms.

Our air raid siren has a sound adjustment lever that allows you to adjust the volume by handle cranking.
The volume level depends on how fast the handle is turned, the faster it is, the louder it is;
It also has a spring-loaded thumb trigger that you can pull to open the blades and let the loud sound out.
The trigger works to modulate the noise, and its default position is off
so you have the flexibility to increase or decrease volume.

These emergency sirens are made of premium aluminum alloy material with anti-rust paint coating
which is built nice and tough, waterproof,wear-resistant for long time using.

Our tornado siren is compact,small,lightweight
and the foldable handle helps to reduce the size,easy to carry and store anytime and anywhere without taking up too much space.

Whether you use it for signalling purposes or as a novelty, the emergency siren works as intended.
It can be used for sound warnings, celebrations and more which is great for sporting events or in case of emergency.
It's not only used widely in hockey games,club soccer games,music competition and radio show play
but also uesed in but also uesed in flood prevention, disaster relief,factories, warehouses,oil depots,
schools,homes,wild adventure and traffic accidents occasions,ect.
It can reduce casualties and property damage by providing timely alarms in emergencies.

Specifications:

Material: Aluminum Alloy
Color: Green

Package:

1xHand Crank Siren