YASONG 110dB Hand Crank Siren, Manual Portable Emergency Alarm Horn, No Power Required, Red or Green Color:Red The waterproof rating and housing

The waterproof rating and housing material should be confirmed because the product page shows conflicting IP and material information

dam flooding areas

The YASONG SLA-800BY portable remote control alarm siren combines a 0–120dB adjustable horn

Magnet base or bolted base options for different installation needs

telecommunications rooms

YASONG 110dB Hand Crank Siren, Manual Portable Emergency Alarm Horn, No Power Required, Red or Green Color:Red The waterproof rating and housingThe 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