...sensor (PNP) 1 +, 3 -, 4 control output Connector-terminal connection type *2 Through-beam type E3Z-T81-M1J 0.3M E3Z-T81-M1TJ 0.3M Retro- reflective type E3Z-R81-M1J 0.3M E3Z-R81-M1T...https://www.ia.omron.com/data_pdf/cat/xw3d_ds_e_3_5_csm1341.pdf