Upgrade your safety and alert system with this 220V 150mm (6″) Diameter Metal Electric Round Alarm Bell. Designed with a heavy-duty metal body and a powerful internal motor, this alarm bell delivers a loud, clear ringing sound that grabs attention instantly. Its bright red color, high-quality build, and stable performance make it suitable for schools, factories, warehouses, workshops, hospitals, and commercial buildings.With a simple electrical connection, this alarm bell ensures consistent operation for fire alarms, emergency alerts, class change bells, and industrial notifications.