SPIRAL ALARMThe 220V alarm siren produces a sound through the motor that drives the wind screw siren, making it sound like an electric drill. GOOD TEMPERATURE ADAPTABILITY. High temperature resistance, low temperature resistance. EASY TO INSTALLEasy installation: Fixed base installation, you can adjust the nozzle up and down. The SCURIT FACTOR LEV220V siren alarm uses high-quality materials with stable working performance and use. WIDE APPLICATION: The powerful 220V siren is driven by an electric motor to emit sound, and the working performance is stable. The 220V alarm siren is suitable for factories, buildings, breakdown warnings and emergency call systems.