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No Power Required, Emergency Warning 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.Adjustable Volume Deisgn 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 springloaded 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.Sturdy and Waterproof Material These emergency sirens are made of premium aluminum alloy material with antirust paint coating which is built nice and tough, waterproof,wearresistant for long time using.Foldable Handle for Easy Carrying and Storage 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.Wide Application 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. Its 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. MORE DETAILS asin B0D814VDB5 audiblenoise 70 db bestsellersrank 8,632 in Electronics See Top 100 in Electronics 27 in Security Horns Sirens brand Sumnacon builtinmedia Handles color Red controlmethod Touch customerreviews 4.6 4.6 out of 5 stars 101 4.6 out of 5 stars itemhighlight Emergency Sturdy Waterproof Aluminum Alloy Tornado Sirens Portable Loud Volume Emergency Sirens for Sporting Events, Red itemtypename securitysirens itemweight 1050 g manufacturer Sumnacon mfrpartnumber ULSMC01496 modelname Hand Crank Siren01 modelnumber HCS01 numberofitems 1 numberofpacks 1 powersource Hand Powered sensortechnology No Sensor unitcount 1 Count
