110DB Air Raid Hand Crank Siren,Hand Operated Crank Alarm,Handheld Loud Operated Fire Emergency Alarm,for Factories,Natural Disasters Coast (Red )

Description

• Versatile Usage: Hand-operated sirens are lightweight, and feature a detachable design. They activate the alarm when the handle is held and play an active role in emergency situations. The hand crank alarm finds extensive use in factories, schools, outdoor camps, mountain rescue and anti-ship vessels, mines, plains, pastures,forestS farms, hotels, and more.
• Robust Design: Crafted with high-strength, impact-resistant ABS plastic housing, this hand-crank siren ensures exceptional durability. The impeller is made of corrosion-resistant cast aluminum, guaranteeing a long service life.
• Mains-Independent and Energy-Efficient: This alarm and signaling device operates independently of mains power, offering energy-efficient performance. Despite requiring minimal effort, this device produces an enormous volume of sound.
• Manual Alarm Trigger: The hand-crank siren can be easily activated by shaking the handle, requiring no external power assistance. The sound level produced by the portable manual siren is loud enough to be heard from a distance of 1/4 mile, ensuring effective warnings in emergency situations.
• Practicality of the Hand Crank Siren: When power and communication networks are disrupted, mobile alarms may fail to reach the affected area. However, the portable and practical hand crank alarm becomes an invaluable tool in such situations.

Features:
1. Hand alarm, easy to use, just twist the handle to trigger the alarm.The runner operates on ball bearings, and the suction and outlet openings are designed to eliminate any risk of injury from the impeller.
2. Even a slight turn of the crank generates a howling sound that increases in intensity as the speed increases.The sound of the portable manual siren was loud enough to be heard from 1/4 mile away.
3. The housing is made of plastic for maximum strength and durability
4. Widely used in factories, schools, troops, natural disasters and coast guards, etc., can be timely warned of any incident. It providing timely warnings and minimizing property and personal losses.
5. Small in size, easy to carry and store, convenient to use and with good performance.

Specifications:
Name: Air Raid Siren
Material: aluminium alloy
Operation type: Hand-operated
Sound type: siren
Decibel: 110 dB
Size: approx. 11 * 23 cm
Colour: red, green
Sound pressure level: 1102dB(A)@1m
Transmission distance:1000m
Sound frequency: 55020hz
Product net weight: 1.2kg
Weight: about 1200g
Product size: about 21*11.5*11.5cm/8.26*4.52*4.52in
Packing size: 186X 186X 170mm

Packing List:
1 * Air Raid Siren

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