The spring plunger with integrated detection (ref. 03020) is equipped with a proximity detector which can start a control signal. At the same time position and detection element this push rod is available of M6 to M10. The bodies, fingers and springs are out of steel. It is possible to order a push rod in mode normally opened or normally closed. It can be used in harsh environment in a beach of temperature of - 25° with +70°C and meets standard IP65. A mini diode (LED) inserted makes it possible to control the state of the open or closed push rod.