key switch ( lock box ) 1)Specialized for Anti-theft rolling door motor 2)Stainless ... steel,durable 3)With CE,CCC,ISO9001,ect The size of the key switch ... the remote control can't used,you can use key switch for opening roling door. "Pursuing quality,permanent and continuous ... JinAn Electric & Machine Co.,Ltd. Stainless manual Key switch ( lock box )