Amazon.com: Twidec/M18 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 8mm Detecting Distance LJ18A3-8-Z/BY : Industrial & Scientific
Amazon.com: uxcell 5mm Inductive Proximity Sensor Switch Detection NPN NO DC 6-36V 300mA 3-Wire LJ18A3-5-Z/BX for 3D Printer Probe Bed Leveling,MCU Board : Industrial & Scientific
Amazon.com: DIGITEN 4 Digital Blue LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN + Sensor Mounting Holder for Lathe Conveyor Belt : Industrial & Scientific
Taiss/30 cm Adjustable M18 Diffuse photoelectric Switch Sensor Optical dc Three Lines NPN NC(Normally Closed) Proximity Switch 6-36VDC E3F-DS30B2: Amazon.com: Industrial & Scientific
Amazon.com: Baomain Capacitive Proximity Sensor Switch LJC12A3-5-Z/AX NPN NC DC 10-30V 200mA 1-5mm Blue : Industrial & Scientific
Amazon.com: DIGITEN 110V-240V 6-Digit 0-999999 LED Display Digital UP Counter+Inductive Proximity Switch NPN Sensor+Holder : Industrial & Scientific
Amazon.com: Hall NPN Sensor, NJK - 5002C Hall Effect Sensor Proximity Switch NPN 3-Wires Normally Open with Magnet : Industrial & Scientific
uxcell 4mm Inductive Proximity Sensor Switch Detector NPN NO DC 5-30V 200mA 3-Wire SN04-N for 3D Printer Probe Bed Leveling,MCU Board: Amazon.com: Industrial & Scientific
Amazon.com: Taiss 2PCS M12 4mm Sensing DC 5V NPN NO(Normally Open) 3D Printer LJ12A3-4-Z/BX-5V Cylinder inductive Proximity Sensor Switch Work Voltage 5VDC Special for MCU : Industrial & Scientific