LK-120 130dB 140dB Manually Operated Air Raid Alarm Siren with Crank Mount

LK-120 130dB 140dB Manually Operated Air Raid Alarm Siren with Crank Mount
Stationary crank mount LK-120 manually operated alarm siren, manually operated security alarm, air raid siren
The crank-operated alarm requires no external power supply and can provide effective alarming in locations without electricity.
The desired alarm effect is achieved by simply manually shaking the handle clockwise at a speed of 2,500 RPM, producing a majestic sound with a strong impact and long wavelength.

When power and traffic are disrupted, other mobile alarms cannot reach the alarm zone, making this portable and convenient crank-operated alarm a very practical solution. Widely used in factories, schools, outdoor military camps, mountain rescue operations, anti-ship vessels, ships, mines, plains, pastures, service stations, airports, forestry farms, hotels, etc.

Specifications:
Type: LK-120 Floor Siren
Material: Aluminum Alloy
Operation: Manual Lever Operation
Color: Green
Siren Diameter: 230mm
Total Height: 75.5cm
Sound Pressure: 125dB +/- 2dB
Frequency: 600Hz +/- 20Hz, depending on speed
Transmission Range: 2500 (Φm)
Package Size: 36.5*40*49cm
Package Weight: 7.5kg

Package Contents:
1 x Floor Siren with Detachable Stand