Proximity Sensor SMT-8-SL-PS-LED-24-B Magnetic, contactless, for T-slot. Design=for T-slot, Authorisation=(* C-Tick, * c UL us - Listed (OL)), CE mark (see declaration of conformity)=to EU directive for EMC, Materials note=(* Free of copper and PTFE, * Conforms to RoHS), Measuring principle=Magnetoresistive