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Manual hand crank alarm made of durable aluminum alloy, portable and easy to operate without power—ideal for emergencies in remote or power-restricted areas. -
- Sound Rating : 120dB(A)@1m；Output Frequency:600±20Hz
- Handle and Cranking Lever Folds
- No Power Supply Required
- Manual Hand Crank Operated Air Raid Siren
- Ideal for getting peoples attention, or rooting for your favorite team in sporting events, and many more applications
