... 3.accept small trial order 4.free samples Product Name: industrial use limit switch Model No.: RL7 series & RL8 Series ... 4.Purpose: RL7 Series:Food machinery, auto packing machines, machine tool, conveying machinery, auto production line control, ideal for light industry ... machinery,conveyer machinery, assembly line, injection molding machine, machine tool and so on. Inner construction of RL8 series