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The MS-690 Double Motor Siren 220VAC is a high-performance industrial alarm device engineered to produce extremely powerful sound output for long-distance emergency signaling. Built with a durable aluminum and metal body, this siren is designed to withstand demanding industrial and marine environments while delivering reliable continuous performance. Its double motor mechanism ensures maximum acoustic efficiency, reaching up to 170 dB at 1 meter, making it suitable for large facilities where clear and immediate alert transmission is critical. The siren supports both AC110V and AC230V power options with 50/60Hz frequency compatibility, ensuring flexibility for various electrical systems. With strong insulation resistance of 100MΩ at 500VDC and a withstand voltage rating of 500VAC for one minute, it offers enhanced electrical safety and operational stability. Rated IP44 for protection against solid objects and splashing water, this red-colored heavy-duty siren is ideal for cranes, ships, fire alarm systems, banks, and security alarm relay applications.

The MS-590 Motor Siren is a heavy-duty industrial emergency hooter engineered to deliver extremely loud and reliable warning signals for factories, warehouses, textile mills, and commercial facilities. Manufactured with robust MS metal construction and a weather-resistant design, it ensures long-term durability even in harsh outdoor conditions. Operating on standard 220V AC with compatibility for 110–240V supply ranges, this siren provides powerful sound output between 125 dB and 135 dB, making it ideal for large-area evacuation alerts, fire alarms, and machinery warnings. With IP55 protection against dust and water, easy wall or column mounting options, and dependable continuous performance, it becomes an essential safety device for industrial environments. Supported by Silver String Chemicals, this siren is suitable for nationwide industrial safety needs where reliability, durability, and high-volume alerting are required.

The MS-390 Motor Siren is a high-performance industrial alarm device designed to deliver loud and reliable warning signals in safety-critical environments. Producing a powerful sound output of 105–115dB with a sensitive trigger mechanism, it ensures timely alerting in ships, vehicles, buildings, and machinery areas. Built with a durable metal shell and pure copper motor, the siren offers stable operation, easy two-wire installation, and flexible mounting options. With IP54 protection and operation on standard AC power, it is suitable for both indoor and outdoor warning applications while maintaining long service life.

The MS-190 Motor Electronic Siren is a powerful alert device designed for emergency and warning applications in industrial facilities, stations, public areas, and ride systems. With a high sound intensity of 120dB and multiple voltage options including 220V AC, 110V AC, 24V DC, and 12V DC, it offers flexible installation for various environments. Its compact 75mm bell diameter, durable red housing, and simple two-wire installation make it easy to deploy while ensuring reliable performance for safety and alert signaling needs.