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The Auto Bed Leveling Sensor For 3D Printer is equivalent to a microswitch mounted on a servo arm controlled by a servo motor. When the tool head lowers to home the nozzle in the Z-axis, the pushpin triggers the hall sensor, at which point the pushpin retracts and the tool head raises.

No moving parts unlike the BL Touch for high reliability. 2 Sensor sizes available to suit your needs (18mm and 12mm). Lighter than the competition (up to 50% less weight versus other proximity sensor solutions). Power from your printer power supply, AC adapter (select below), or USB Port. Connects to the Z Endstop via 2/3 pin JST plug or 2 pin screw terminal.

Geeetech TL-touch Auto Bed Leveling Sensor With High Compatibility For 3D Printer Features:

• 1 X 3D Touch Auto Leveling Sensor
• 1 x 5pin interface
• 1 x 80CM extension cable
• with screws & nuts & washer