E3F-R2P1 DC Three-Wire PNP Normally Open M18 Mirror-Finish Photoelectric Switch

E3F-R2N2 DC Three-Wire NPN Normally Closed M18 Mirror-Finish Photoelectric Switc

E3S-GS30E4 DC 3-Wire NPN Normally Open U-Channel Photoelectric Switch Sensor

E3S-GS30E2 DC 3-Wire NPN Normally Closed U-Channel Photoelectric Switch Sensor

Taiss 2PCS LJ12A3-4-Z/BX Proximity Switch 3D Printer Inductive NPN NO, NO

1PC Square Proximity Switch XPD-001 DC Three-Wire Inductive NPN Normally Open

2pcs NJK-5002C Hall Effect Sensor Proximity Switch NPN 3-Wires Normally Open