Portable Hand Crank Siren Manual Handheld Air Raid Siren 110DB Lound Emergency Safety Siren Fire Alarm Air Siren Horn Home Self Protection Security Alarm Siren

Specifications: Material: aluminum alloy Color: Red Weight: 1.2 kg / 2.64 lb Size: 24 * 14 * 14 cm / 9.4 * 5.5 * 5.5 inch Rotary speed: 2000 r / min Frequency: 550±20 Hz Sound level: 110±2 (Class A) at a radius of 1 meter Package included: 1x Handheld alarm

• Lightweight design, easy to carry, can produce a loud & powerful sound of 110 db.
• The hand siren is made of durable aluminum alloy with anti-rust paint outside, durable and wear resistant.
• The hand-operated alarm does not require power support. Just rotating the handle manually, the faster the speed, the louder the sound.
• When the power and traffic are blocked, other mobile alarms cannot enter the alarm area. The portable and convenient hand-crank alarm becomes a very convenient and practical alarm.
• Widely used in factories, schools, military units, disasters, forest fire prevention, flood control, fire protection, reservoirs, airports, hotels and other emergency places. It can effectively provide timely warnings in the event and reduce people's property losses and casualties.