Please read the description carefully before purchasing. We are committed to providing high-quality products and superior customer support. MS-490 Motor siren 220V High decibel Air Raid Siren Horn Motor mining industry Double Industry Boat Alarm factory school</p> <p> </p> <p> </p> <p> Product name: tweeter</p> <p> </p> <p>Optional voltage AC110V\/220V</p> <p> </p> <p>Frequency(Hz)50\/60</p> <p> </p> <p>Decibel dB(A)1m: 120</p> <p> </p> <p> </p> <p>Durable and high volume so it is easy to transmit signal tones over long distances</p> <p> </p> <p>It is suitable Compatible with transmitting signals in various cranes, ships, fire alarm systems, as well as farm and public security alarm transmission.</p> <p> </p> <p>Surgical Standard Color: RED</p> <p> </p> <p>Housing material: aluminum and steel</p> <p> </p> <p>Insulation resistance: 100MQ(at 500 VDC)</p> <p> </p> <p>Withstand voltage: 500VAC, 50\/60Hz in 1 minute</p> <p> </p> <p>Protection class: IP44</p> <p> </p> <p>Dedicated motor: high-quality motor with a rotation speed of 10,000 rpm.</p> <p> </p> <p>Duration: The sustainable working time reaches more than 40 minutes.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-WuhanGQ shop 3