Geeetech 3D Printer Parts LJC 12A3-4-Z/BX NPN DC6-36V Capacitive Proximity Sensor Switch for 3D Printer Auto-leveling


SKU: 32856851021 Categories: ,


Capacitive Proximity Switch

This capacitive proximity switch is designed to improve the accuracy and efficiency of the auto leveling process for 3D printers. Able to detect both metal and non-metal building platform.

For those who 3D print a lot or 3D printing beginners, it makes leveling the build platform a no-brainer. This kind of proximity switch will enable your printer to take several bed leveling readings and calculate a level plane so your prints are always level. While printing each layer, you z-axis will be in constant motion to compensate for an un-level bed.


  • Save time messing with springs and screws on your print bed. Run the Auto-level procedure before every print or just one time for each start-up of the printer.
  • Less issues related to un-level print beds like parts coming up on one corner and nozzles jamming because the print starts too close.

Note: For Geeetech 3D printers, this capacitive proximity switch can only support A30 3D printer at present. Before your purchasing, make sure that the firmware of your printer is compatible with it.

Product Features:

  • Model: LJC 12A3-4-Z/BX
  • Output Type: NPN
  • Supply Voltage: DC 6-36V
  • Power: 500~600HZ
  • Detection Distance: 5-10mm (±5 adjustable)
  • Operating Temperature: -25℃ ~ +75℃
  • Wire Length: 15cm
  • Dimension: 12*60mm
  • Made from copper

Package include: 1pc x Capacitive Proximity Switch

Additional information

Weight 0.08 kg
Dimensions 12 × 8 × 3 cm
Item Type

Auto Self-Leveling Sensor

Model Number

Capacitive Proximity Switch

Brand Name