Inductive Proximity Switch/Sensor 12-24 Volt PNP 5 mm CNC 3D Printer Endstop Square : Amazon.de: Business, Industry & Science
CONTRINEX DW-AD-303-M4 Switching Distance: 0.6 MM, Proximity Switch, Discontinued by Manufacturer, INDUCTIVE, Open for Flush MOUNTING: Amazon.com: Industrial & Scientific