1.Super economical energy motor,lower power,the lowest sounds,long-life. 2.High-brightness body,use the imported ABS material,corrosion-proof,aging-proof and colorfast. 3.Super thin panel,suitable for window,ceiling,glass mounted. 4.Inside have set to prevent the wind return back to room and have passed the IPX4 test,safer in use. 5.Suitable for lab,meeting-room,bath-room and so on.