Limit switch(mini limit switch,electrical switch)(HL-5050) strong structure,made of Zinc metal alloy ... and plastics small size,w Limit switch(mini limit switch,electrical switch)(HL-5050)Characteristics:double way switchstrong structure,made of ... ,longer machine lifebigger OT actioneasy to contact linemany kinds of leading-to-move machine,easily use Limit switch(mini limit switch,electrical switch ...