Multiple Working Modes- Outdoor Alarm Siren: 24 hours sound and flash alarming. 24-hour flashing but silent alarming Sound and flash alarming at night silent flash alarming at night Sensitive Motion Detector and Loud Siren: Motion sensor solar strobe light with 9-12 meters sensing distance, sensing angle 110, 120db alarm and 8LED bright,1500m visible flashing light, the motion alarm outdoor can be heard from 1800m away. Sturdy Made and Waterproof of Motion Detector Alarm: Upgraded motion sensor alarm outdoor with IP65 waterproof, ABS sturdy casing, Smart solar strobe light suitable for any weather and outdoor environment, without false alarms. Widely Use of Motion Sensor Alarm Outdoor: Outdoor motion sensor alarm for Houses, Farms, Barn, Garages, Yards, Villa, Hotels, Factories, Schools, Orchard and everywhere requiring security alarm. Long-Lasting of Motion Sensor Noise Maker: One solar charge 6-8 hours, keep working around 30 days.