LK-JDW450 large electromechanical sirenis a double-ended siren for horizontal mounting. Powered by a three phase motor. It is designed for roof or pole mounting. It can be used in:

　　Civil defence warning systems of major cities all over the world.

　　Fire warning systems of community, main factries, mines, buildings, forests, ect.

　　Warning for natural disasters of earthquake, tsunami, flood, etc.

　　Warning for accidents of reservoirs, dams, jails, airports, army, farm and pasture, etc

　　Dimention