MS-490 motor alarm wind bolt alarm 220V tunnel mining electric air defense alarm

🔸 Product Name: Wind Screw Motor Alarm🔸 Product model: MS-490🔸 Product Material: Iron Shell🔸 Horn decibel: 120 decibels🔸 Reserved wire length: 250MM🔸Protection level: IP44Function:✅ Strong penetration power✅ High speed rotation✅ Rust prevention and anti-corrosion✅ All copper wound wire✅ Waterproof and moisture-proof✅ have a swift responseWidely used:Used for civil defense and civil defense alarm systems; Alarm systems for mines, explosions, prisons, reservoirs, power stations, substations, airports, stations, military bases, etc; Sound alarm for natural disasters such as earthquakes, tsunamis, floods, flood control and disaster relief, mudslides, landslides, typhoons, fires, minefields, forest fires, etc; Fire or emergency alarm systems for factories, schools, docks, warehouses, public buildings, commercial areas, residential areas, ports, etc.characteristic:🌟 The motor alarm has undergone heat treatment processing, with strong moisture-proof and corrosion-resistant capabilities, and does not get stuck, crash, or deform. It has functions such as wind and sand prevention.Quick start, stable operation, loud sound source, strong penetration, and wide sound coverage🌟 The surface is sprayed with anti rust paint, which effectively prevents corrosion and has a longer lifespan.Wide heat dissipation and sound amplification port, combining heat dissipation and sound amplification, fast heat dissipation and high ventilation efficiency🌟 The high-speed motor drives the bidirectional wind spiral to generate continuous alarm sound, and the multi wing impeller adopts dynamic balance calibration with strict wind mechanics technology, which plays a more powerful decibel effect in converting wind energy into sound energy🌟 Adopting high-frequency motor speed rotation, with a speed of ≥ 1000x/MIN, stable operation, copper core coil drive, more efficient and powerful performance