Pressure sensor SDE5-V1-O-Q4E-P-M8 For vacuum with M8 plug version. Authorisation=(* RCM Mark, * c UL us - Recognized (OL)), CE mark (see declaration of conformity)=to EU directive for EMC, Materials note=Conforms to RoHS, Measured variable=Relative pressure, Measurement method=Piezoresistive pressure sensor