Sirens 120dB, Portable Hand Crank Alarm Alarm Siren Hand Crank Air Raid Siren Manual Hand Siren for Factories, Schools, Troops, Natural disasters and Coast Guards
Special features Extremely robust housing made of high-strength, impact-resistant ABS plastic - Impeller made of corrosion-resistant cast aluminum - This guarantees a long service life - Runner is ball-bearing - Suction and outlet openings are designed in such a way that there is no risk of injury from the impeller - Foldable handle and hand crank - Weight only 600 g - ideal for mobile applications
Description
Mains-independent and energy-efficient alarm and signaling device - It is characterized by a sophisticated, modern and elegant shape - Enormous volume with minimal effort - Even a slight turn of the crank generates a howling sound that increases as the speed increases, The housing is made Made of durable plastic for maximum strength and durability
Manual alarm The alarm can be triggered by shaking the handle without power assistance. In the event of a power failure, you can use the rocker to provide power and sound the alarm. The size of the sound depends on the speed of the hand, the sound of the portable manual siren was loud enough to be heard from 1/4 mile away
Practicality hand crank siren.
When power and traffic are blocked, other mobile alarms cannot get into the alarm area, and the portable and practical hand crank alarm becomes a very practical alarm. Wide range of uses and long service life, the essential elements for emergencies at any location can trigger timely warnings and reduce the loss of property and people
Usage
Hand-operated sirens are lightweight, easy to carry, detachable and alarm when the handle is held. The hand alarm plays an active role, the hand crank alarm. Widely used in factories, schools, outdoor military camps, mountain rescue and anti-ship vessels, ships, mines, plains, pastures, gas stations, airports, forest farms, hotels, etc.
