Hand Crank Air Raid Siren
This hand-operated lightweight siren produces a loud adjustable sound of 110dB ideal for getting people attention on camps, schools while cheering your favourite team in sports events or any place that you want to produce an effective warning sound and electricity is not available. The handle and lever fold for easy carrying on the included waist pack.
Material: Aluminium alloy
Operation: manual hand lever operated
Sound output: 110±2(dB)
Audio frequency: 550±20(HZ)
Transmission distance: 1000(Φm)
Features and Benefits
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 favourite 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.
1 x Hand Crank Air-raid Siren