1、Dedicated high quality motor with rotation speeds of 10,000 rpm. Sustainable working hours are over 40 minutes. 2、High speeds motors can produce continuous alarm sound, which can spread over a long distance and up to 150db. 3、The metal protection mesh cover is designed to prevent injury during work. 4、Applicable to the transmission of signals in a variety of cranes, ships, fire alarm systems, as well as farm, security alarm transmission. 5、Designed for a long duty cycle, it is the perfect solution for emergency alerts in industrial environments. Features: 1. Dedicated high quality motor with rotation speeds of 10,000 rpm. Sustainable working hours are over 40 minutes. 2. High speeds motors can produce continuous alarm sound, which can spread over a long distance and up to 150db. 3. The metal protection mesh cover is designed to prevent injury during work. 4. Applicable to the transmission of signals in a variety of cranes, ships, fire alarm systems, as well as farm, security alarm transmission. 5. Designed for a long duty cycle, it is the perfect solution for emergency alerts in industrial environments. Specification: Condition: 100% Brand New Item Type: Alarm Horn Model: MS-490 Alarm Volume: 150DB Shell Color: Red Housing Material: Aluminum and Steel Insulation Resistance: 100MΩ (at 500 VDC) Package List: 1 x Industry Electric Motor Driven Siren