Compatible with most printers; small and compact size; easy installation; plug-and-play. This endstop solution supports both optical and mechanical switch configurations, making upgrades and replacements straightforward. Its compact form factor helps keep builds neat and prevents space issues inside the printer chassis. Warm tips Generally, printer DIY systems require at least three optical switches; under normal circumstances, the system must be configured to at least three mechanical switches. Practical applications - Upgrading a DIY 3D printer to optical endstops for X, Y, and Z axes to improve homing reliability and repeatability. - Replacing worn mechanical endstops in custom builds to enhance stability and accuracy. - Adding a three-switch endstop setup for firmware configurations that require multiple switch inputs on multi-axis printers.