F65 series ultrasonic sensor
E3JK-5DM1 Through-Beam Sensor 5m NPN DC12-24V Pair
FSB-001
M8 Flush Inductive proximity sensor
M18 Flush Analog Proximity Sensor – 5mm Shielded Continuous Detection (0-4.6mm Reliable), 0-10V (BILT5-GM18-U) / 4-20mA (BILT5-GM18-I), Flush Mount
TL-Q2M Series Square Proximity Switch – 2mm Flush Detection (Reliable 0-1.5mm), Compact Industry-Standard Square Body, DC 3-Wire NPN NO/NC & PNP NO