- Sound Rating : 120dB(A)@1m；Output Frequency:600±20Hz
- Handle and Cranking Lever Folds
- No Power Supply Required
- Manual Hand Crank Operated Air Raid Siren
- Ideal for getting peoples attention, or rooting for your favorite team in sporting events, and many more applications
Mannual Hand Siren Alarm 200A
Description
The hand alarm is accelerated step by step through the transmission of the gearbox and then drives the ringing wheel to run at high speed by manual rotation of the rocker handle. In the process of high-speed operation, the ringing wheel resonates with the absorbed air by extruding the fixed window of the high-speed and high-pressure fixed wheel at the same time, thus playing an alarm role.
Transmission distance: 2km
Material: Aluminum arroy
Weight: 6kg
Powerful Universally Recognized Sound；Produces a loud adjustable sound of 120 decibels.
It is mainly used for flood control, disaster resistance, forest fire protection, military supplies, public and industrial occasions to respond to emergency alarms.
