WIDE APPLICATIONS SPIRAL ALARM: The 220V alarm siren produces sound through a motor that drives a face-to-face type siren wind, resulting in a sound similar to an electric drill. GOOD TEMPERATURE ADAPTABILITY: Resistant to both high and low temperatures. EASY ASSEMBLY: Simple installation with a fixed base; the nozzle can be adjusted up and down. HIGH SECURITY FACTOR: The 220V siren alarm is made from high-quality materials, ensuring stable performance and reliable operation. The powerful 220V siren is motor-driven, delivering consistent and loud sound output. This 220V alarm siren is suitable for use in factories, buildings, roadside breakdown alerts, and emergency call systems. Alarm Systems for Large Workplaces: This 220V alarm siren is widely used in mines, power stations, aviation facilities, airports, ports, warehouses, docks, and blasting operations. Alarms for Natural Disasters: This 220V alarm siren is designed for use in earthquake, landslide, typhoon, fire, and forest fire prevention warning systems. Emergency Alert Systems for Public Spaces: This 220V alarm siren is commonly used in factories, schools, fire safety systems, security systems, public buildings, commercial areas, and residential areas for emergency alerts.