DC 12V 24V Inductive Proximity Sensor Switch Inductive Sensor PNP Interruptor Detector Monitor Metal DC Switch Metal with Cable|pnp|pnp proximity sensorpnp sensor - AliExpress
440N-G02044 | Allen Bradley Guardmaster Ferrogard 440N Magnetic Non-Contact Safety Switch, 24V dc, NC, Plastic, 2m Cable | RS Components