Item Tag: 7.09×6.77×5.87 Inches
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Handheld Air Raid Siren 110DB Loud Manual Hand Crank Emergency Alarm, Portable
Manual Hand Crank Operated Air Raid Siren. Produces a loud adjustable sound of 110 decibels. 1 x Air Raid Alarm. Specifications: dB(A)1m 110±2. Rate HZ 550±20（Depending on the hand speed. Transmission distance Φ 1000M.
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Handheld Air Raid Siren 110DB Loud Manual Hand Crank Emergency Alarm, Portable
This manual siren produces a powerful110±2 decibel output, ensuring your alert is heard over long distances. Airflow generates loud siren sound. Manual Hand Crank Operation – No Power Required. Turn the crank handle manually.