TopWorx™ 7LY is a dual proximity sensor featuring bright dual LED domes - visible from long distances. It is easily adaptable to NPN or PNP circuits and it can be wired as a Normally Open (Form A), Normally Closed (Form B) or Normally Open/Normally Closed (Form C). The 7LY offers higher durability to physically abusive environments and has a pressure rating (sensing face) of up to 140 bar (2000 psi).