UKCOCO 5pcs Micro Limit Switch Waterproof Momentary Push Button Switch 3 Pins Long Hinge Lever Micro Switch: Amazon.com: Industrial & Scientific
Longdex 6-Pack Micro Limit Switch Snap Action Long Roller Lever Arm SPDT Momentary Micro Limit Switch Silver Contacts V-156-1C25: Amazon.com: Industrial & Scientific
uxcell ME-9101 Flexible Coil Spring Rod Momentary Limit Switch ME-8167 1NC+1NO 3Pcs for CNC Mill 3D Printer Door Switch: Amazon.com: Industrial & Scientific