Description
Hand-operated sirens are lightweight, easy to carry, detachable, and sound an alarm when the handle is held..The hand-cranked alarm plays an active role. When the power and traffic are blocked, other mobile alarms cannot enter the alarm area, and the portable and convenient hand-crank alarm becomes a very convenient and practical alarm..Widely used in factories, schools, military units, flood prevention, natural disasters, open-air military camps, air defense, mountain rescue and seaside anti-ship, forest fire prevention, flood control, fire protection, prisons, reservoirs, ships, mines.The essential items for emergencies in any place can effectively provide timely warnings and reduce people's property losses and casualties..The plastic case makes the alarm lighter and more convenient to carry.
