Base Mount Hand Crank Alarm Hand Crank Air Raid Siren – 110dB Loud Manual Emergency Alarm, Base/Table Mount Outdoor Warning Siren for Survival & Safety
$31.99
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Product details
Color: Green
Brand: YuYBrightmi
Power Source: Hand Powered
Product Dimensions: 5"L x 5.5"W x 6"H
Control Method: Touch
About this item
Manual Hand-Crank Operation – No batteries or electricity needed. Simply rotate the handle to generate sound—speed controls volume and pitch (faster = louder/higher frequency).
Durable & Portable – Made of lightweight aluminum, compact size and features a stable base/table mount for indoor/outdoor use.
Adjustable Volume Control – Spin faster = louder alarm! Control sound intensity (up to 550±20Hz) by hand speed. For maximum volume, open the blades to amplify the siren’s reach—ideal for drowning out wind or background noise.
Powerful 110dB Alarm – Produces loud emergency alerts (110±2 dB at 1m) with a piercing 550±20Hz frequency, audible up to 1000m away. Ideal for factories, schools, military, disaster relief, and public safety.
Versatile Emergency Tool – Critical for flood control, forest fires, industrial accidents, and survival scenarios. Trusted by militaries, families, and first responders.
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