Crank Horn Portable Siren 110dB Hand Operated Metal Alarm Air Raid Emergency Security Alarm

General DescriptionThe transmission gearbox makes a sound when manually turning the handle. The tone of the alert varies depending on the rotation speed, providing timely warning to reduce material losses. It is ideal for use in various environments such as factories, families, schools, as well as flood control and disaster relief. Its lightweight design allows for easy transportation.Technical specificationsMaterial: Durable aluminum alloyStrength: Strong and wear-resistantCompatibility and accessoriesUse in industrial environmentsSuitable for emergency situations and public alertsInstallationEasy to install, simply attach the gearbox to the desired location and ensure easy access to the handle.UsageTurn the handle to emit an alert sound, adjust the speed to change the your.Ideal for emergency signals and alerts in various contexts.