Hand Crank Alarm

The hand crank alarm is a manually operated warning device designed to produce a loud, attention-grabbing sound over long distances. Engineered for reliability and ease of use, this alarm emits a universally recognized siren with an effective audible range of up to 1.5 kilometers. It is ideal for emergency alerts in areas where electrical power is unavailable or unreliable, such as construction sites, remote locations, disaster response zones, and large outdoor gatherings.

Product Features

High-Volume Sound Output

Delivers a powerful, mechanical siren sound audible up to 1.5 kilometers, ensuring wide-area coverage in emergency situations.

Manual Operation

Operates without electricity or batteries, making it ideal for power outages, off-grid locations, and field operations.

Adjustable Sound Intensity

Equipped with a shutter mechanism that allows users to regulate the volume and tone of the alarm to suit different environments and requirements.

Durable Construction

Built from high-quality metal components for long-lasting performance in rugged and outdoor conditions.

Portable and Lightweight

Compact and lightweight design allows for easy transportation and rapid deployment in emergencies.

Low Maintenance

Requires no external power source and minimal maintenance, reducing long-term operational costs and ensuring reliability.

Product Specifications

• Sound range: Up to 1.5 kilometers
• Operation: Manual (hand crank)
• Mechanism: Shutter for adjustable sound intensity
• Material: Heavy-duty metal body
• Use cases: Emergency alerts, civil defense, evacuation warnings, outdoor event safety, industrial safety
• Power requirement: None (manual operation)
• Portability: Lightweight and easy to transport
• Maintenance: Minimal, no electrical components