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0.9m 1.2m Permanent Magnet Motor Large Industrial Size Wall Ventilation Fans. Customizable Wind Speed: Adjustable from 1m/s to 6.7m/s to adapt to diverse needs. Energy Efficient Motor: PMSM motor with regenerative braking and zero rotor losses. Lightweight Alloy Blades: Aluminum-magnesium alloy blades offer high strength and long lifespan. IP55 Protection Class: Resilient against oil, dust, and moisture for industrial use. Dual Safety Ropes: Anti-vibration and fall-prevention capabilities for reliable use. Low Noise Operation: Noise level under 39dB for a comfortable environment. Smart Control Options: Supports WLAN, Bluetooth, 4G, and centralized control.