Homend Handheld Air Raid Siren, 110db Hand Loud Crank Operated Air Raid Siren Home Self Protection Security Alarm Siren Aluminum Alloy Crank (110DB Handheld)
Brand: Homend
Color: green
Features:

Handle and Cranking Lever Folds.
No Power Supply Required.
Compact for Portability.
Powerful Universally Recognized Sound.
Manual Hand Crank Operated Air Raid Siren.
Produces a loud adjustable sound of 110 decibels.
Made out of durable aluminium alloy.
Ideal for getting peoples attention, or rooting for your favorite team in sporting events, and many more applications.
By manually rotating the handle, the gearbox of the transmission step by step acceleration to achieve the purpose of sound, the sound depends on the rotation speed of the handle.

Specification:

Material: Aluminium alloy
Operation: Manual hand lever operated
Color: Green
Sound output: 110±2(dB)
Audio frequency: 550±20(HZ)
Transmission distance: 1000(Φm)
Dimensions
Length: 115mm/4.5"
Width: 202mm/8"
Height: 9.1"

Operation steps:

1 Grab the grabbing handle in left hand and open the air door (adjust the air door according to the direction of motion to control volume of the sound);
2,Turn the rocking handle clockwise with right hand till you hear the sound

Package Included:

1 x Air Raid Alarm
【Durable Aluminium Alloy】: Made out of durable aluminium alloy.The handle and lever folds for easy carrying on the included waist pack.
【Working Principle】: By manually rotating the handle, the gearbox of the transmission step by step acceleration to achieve the purpose of sound, the sound depends on the rotation speed of the handle.
【Powerful Sound】: This hand operated lightweight siren produces a loud adjustable sound of 110dB powerful universally recognized sound.
【Portable】: No power support, compact structure, easy to carry, a wide range of applications, such as the advantages of long life.
【Application】: Ideal for getting people attention on camps, schools, while cheering your favorite team in sport events or any place that you want to produce an effective warning sound and electricity is not available.