... Product Name: RL7 & RL8 type industrial use limit switch Model No.: RL7 type& RL8 type 1.Cotact Material: Silver cadmium oxide ... 4.Purpose:RL7 Series:Food machinery, auto packing machines, machine tool, conveying machinery, auto production line control, ideal ... engineering machinery,conveyer machinery, assembly line, injection molding machine, machine tool and so on.Inner construction of RL8 series ( ...