Use this tag for question that relate to switches or probes to level the bed either manually or automatically

A Z-probe is a mechanical (contact), electronic (capacitive, inductive or piezo), acoustic or optical sensor that is used to level the (heated) build plate. Usually the less expensive 3D printers are equipped with a simple mechanical switch to level the bed. More advanced sensors can be used to automatically level the bed. The choice of sensor depends on the choice of the (heated) build platform.