... )Both electric and manual operation 3)Remote control 4)ISO,CE,CCC,ect Garage Dodr Motor Specifications: Model NO.Max upgrade height ... ensure absolute safety brake.4) Limit System: Correct control , easy operation , and big control range.5) Transmission System : High accuracy, smooth running , and low ... future.Best regards, ----ZhangZhou JinAn Electric & Machine Co.,Ltd. Roller Motor For Garage Door