Vixen Horns Air Raid Hand Crank Siren, Loud Heavy Duty Tornado Siren with Base/Table Mount, Fire Air-raid Alarm, Warning Construction Air Horn VXS-1200M

This old-fashion military-style hand-operated siren produces a universally recognized powerful sound with an effective range of one mile. Housing is made of steel for maximum strength and durability. The siren features a shutter mechanism that allows you to regulate the intensity of the sound. It comes with a three-bolt stationary base mount for easy installation. Ideal for getting people's attention in places where electricity is not available. Heavy Duty Hand Crank Alarm Air Raid Siren (Gray Camouflage Pattern) Type: Manual Hand Lever Operated Construction: Metal housing No Power Supply Required Robust and Compact Powerful Low-Frequency Sound Universally Recognized Signal Shutter Mechanism 3-Bolt Mounting Base Dimensions: 15.83" H x 8.35" W x 11.57" D Note: While in use, for maximum sound output, make sure the radial openings in the siren are fully opened by turning the Handle Bar.