SUDEG Hand Crank Alarm/Siren,125dB Portable Manual Operated Air Raid Siren Fire Emergency Safety Alarm,LK 120 Green

Power-Free Operation - This hand crank siren horn operates without the need for a power supply, making it highly reliable in areas where electricity is unavailable. It ensures effective alarm functionality even in off-grid or emergency situations, eliminating dependence on batteries or electrical outlets. Easy Operation with Powerful Sound - Achieving the desired alarm effect is simple: just manually shake the handle clockwise at a primary speed of 2500 revolutions per minute. This operation produces a majestic, high-impact sound with a long wavelength, ensuring clear and far-reaching auditory alerts. Critical Role in Extreme Emergencies - In scenarios where power and traffic are disrupted—rendering mobile alarms ineffective—the portable and practical design of this hand crank siren becomes invaluable. It serves as a dependable alarm solution when other devices cannot access the affected area. Wide-Ranging Applications - This alarm is versatilely used across numerous settings, including factories, schools, open-air military camps, mountain rescue operations, anti-ship vessels, ships, mines, plains, pastures, gas stations, airports, forest farms, and hotels, meeting diverse safety and alert needs. Impressive Acoustic Performance - Boasting a sound pressure level of 125 dB +/- 2 dB and a frequency of 600 Hz +/- 20 Hz (adjustable based on handle speed), the siren ensures strong penetration. Its transmission range covers a 2500-meter diameter, guaranteeing broad coverage for effective alarming., Weight: 16.314207388 Pounds, Manufacturer: SUDEG