Make sure both the pots are centered. Then take a magnet for x axis.Try both the poles. Find the pole of magnet that triggers sensor within 1 inch of magnet.Install the X magnet into afterburner carriage. Please repeat the same process for Y axis and then install it in zblock. Hall effect endstop board for X and Y axesThe Hall Effect board allows for contactless homing on the X and Y axis on a Voron 2.When hall sensor reaches close to magnet it produces a voltage.The circuit then compares that with a reference voltage. The comparator flips based on threshold set using the trim pots. Please follow following procedure to setup Hall Effect Board.Material: PCBcolour: blackPackage Contents:1 x limited switchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.