TF1 series of touchless position sensors are unaffected by strong magnetic fields and metal flakes or filings present in a user’s environment. The series consists of an inductively coupled position marker attached to a moving rod or piece of the user’s application that requires a position measurement and the sensor with operational and programming status LEDs. While operating, LEDs indicate whether the sensor is operating and the marker is within measuring range or out of range as well as indicating results of internal diagnostics for valid output from the sensor. The sensors are plug in-compatible with many existing sensors including magnetostrictive and resistance track sensors.