Warning Sirens (Plastic)  An ideal method to warn people of dangerous situations including: severe weather warnings, emergency circumstances, terror situations, military alerts and correctional facility alerts. Easy hand crank operation. Type A-E include a convenient carrying bag. Type F-H are easy to install thru your local contractors or electricians. Specs: Audible Distance 1/4 Mile, Tone Single, Construction Plastic, Also Avilable I n 100% Recycled Material For $39.00