Cylinder Switch Sensor, DC AC 5V 240V Magnetic Air Cylinder, Reed Switch None Internal Consumption Current for Pneumatic Cylinder SU SC SI MAL MA: Amazon.com: Tools & Home Improvement
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Amazon.com: ASCO NUMATICS NPN-QDS-M8-U Discontinued by Manufacturer, M8 Connector SNAP FIT, Magnetic Position Sensor, Hall Effect-NPN Sinking, PUR Cable .3M, T-Slot Switch; NPN Quick Disconnect : Industrial & Scientific