Item Tag: Manual Winding
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Hand Crank Siren Manual Operated Air Raid Siren with Foldable Handle for Spor…
Our tornado siren is compact,small,lightweight. 1xHand Crank Siren. It also has a spring-loaded thumb trigger that you can pull to open the blades and let the loud sound out. but also uesed in flood prevention, disaster relief,factories, warehouses,oil depots.
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Hand Crank Siren Manual Operated Air Raid Siren with Foldable Handle for Spor…
Our tornado siren is compact,small,lightweight. 1xHand Crank Siren. It also has a spring-loaded thumb trigger that you can pull to open the blades and let the loud sound out. but also uesed in flood prevention, disaster relief,factories, warehouses,oil depots.
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Hand Crank Siren Horn, Hand Loud Crank, Emergency Safety Manual Siren, Portab…
MANUAL OPERATION: Generates alarm by turning handle; louder sound with faster rotation speed. ADJUSTABLE SOUND OUTPUT: Achieves up to 110 dB at 150 rpm, effective range about 1 km under open field conditions.
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Hand Crank Siren Horn, Hand Loud Crank, Emergency Safety Manual Siren, Portab…
MANUAL OPERATION: Generates alarm by turning handle; louder sound with faster rotation speed. ADJUSTABLE SOUND OUTPUT: Achieves up to 110 dB at 150 rpm, effective range about 1 km under open field conditions.
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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.