NEWTRY Air Raid Hand Crank Loud Alarm/Siren Aluminium Alloy 120dB Manual Operated Portable Hand Crank for Fire Security Rescue，Home Self Protection Security(LK-120)

Product Description By shaking the handle to drive the high-speed operation of the horn, when the slewing wheel rotates, the air from the side of the air generates high-speed high-pressure and the resonance of the window of the fixed wheel simultaneously causes resonance. Product material: aluminum alloy; product weight: 9kg It is mainly used for flood control, disaster resistance, forest fire protection, military supplies, public and industrial occasions to respond to emergency alarms. The sound intensity can be adjusted to produce different volume, low frequency and wide application range. Folding step 1. Take the product out of the box, turn the five-star handle counterclockwise, and take out the platen and the whole set.2.The fixed wheel plane is up, balanced with the bracket reinforcement, and the pressure plate is placed below3.Fixed with a five-star handle under the pressure plate.4.The right hand swings the handle clockwise to make a sound Use the left foot to fix the bracket to strengthen the support, hold the handle with your left hand and open the damper (adjust the damper control sound according to the direction of motion) Attention: One year warranty

• 1.Sound Rating : 120±2(A) Output Frequency:600±20
• 2.Easy to fold, easy to carry
• 3.No Power Supply Required.
• 4.Manual Hand Crank Operated Air Raid Siren.
• 5.Ideal for getting peoples attention, or rooting for your favorite team in sporting events, and many more applications.