★The sound of this air alarm is very loud, about 140db, which can be heard over a long distance (about 300m). Decibel: 140db. ★Equipped with 400W 100% pure copper motor, high efficiency, speed 1000rev/sec, support the continuous work of industrial alarm.
★the Sound of This Air Alarm Is Very Loud, About 140db, Which Can Be Heard over a Long Distance (About 300m). Decibel: 140db. ★There Are Four Pre-drilled Holes on the Solid Base for Easy Installation.
★Equipped with 400w 100% Pure Copper Motor, High Efficiency, Speed 1000rev/Sec, Support the Continuous Work of Industrial Alarm. Power: 400w. ★There Are Four Pre-drilled Holes on the Solid Base for Easy Installation.
