The manufacture of the Tianyi brandshutter door motors utilizes most advanced production thechniques combined with the latest technologies avaliable to provide realiability with diverse functionality.They can be simple to install and are proven to be ideal accessories to a wide variety of applications. Features of Tianyi brand shutter motor: 1) Good design, advanced structure, strong power. 2) Easy installation, Long service life. 3) Low noise, Small power wastage, little vibration. 4) Remote control. 5) Limit switch unit enables precise adjustment of door in both up and down positions 6)Electric and manual operation 7) Easy installation, legerity design,stable operation,low noise, small power consumption Technical parameters : Model Power(w)Set loadMax lifting height (m)Max external diameter ofDoor (m)Chain No.Weight of the main machine(Kg) Lifting force (kg.f)Output torque N.mOutput turn Speed r/min220V 50Hz300-1p180300168560.4208B7.4500-1p370500343660.4210A11600-1p370600412660.4210A11800-1p4008006474.260.4610A161000-1p40010008093.670.4810A16380V 50Hz300-3p180300168560.4208B7.4500-3p250500343660.4210A11600-3p250600412660.4210A11800-3p3008006474.260.4610A161000-3p36010008093.670.4810A161300-3p600130014015.49.50.5412A221500-3p600150016714.7120.6012A22