YASONG 110dB Hand Crank Siren, Manual Portable Emergency Alarm Horn, No Power Required, Red or Green Color:Red 1m safety margin

1m safety margin

8in(L*W*H)

Power：45Watts

12 built-in sounds with remote tone adjustment

YASONG 110dB Hand Crank Siren, Manual Portable Emergency Alarm Horn, No Power Required, Red or Green Color:Red 1m safety marginThe YASONG hand crank siren is a manual emergency warning horn designed for locations where power supply may not be available. It is suitable for factories, homes, schools, warehouses, flood control areas and temporary emergency warning use. This model works by hand operated cranking, so it does not require wiring, batteries or charging. The faster the handle is cranked, the louder the siren sound becomes. Manual hand crank operation with no power