Proximity Sensor SMEO-4U-K-LED-230 With reed contact and light-emitting diode, without mounting kit. Design=Round, Conforms to standard=DIN EN 60947-5-2, Authorisation=C-Tick, CE mark (see declaration of conformity)=(* to EU directive for EMC, * to EU directive low-voltage devices), Materials note=Free of copper and PTFE