... With CE,CCC,ISO9001,ect The size of the key switch ( lock box )is about 15*9* ... other style.Clutch lock(contain clutch line) ;Adopt Manual operation;When the remote control can't used,you ... can use key switch for opening roling door. "Pursuing quality, ... near future.Best regards, ----ZhangZhou JinAn Electric & Machine Co.,Ltd. Stainless manual Key switch ( lock box )