Feature: 1. Good Compatibility: This 3D printer mechanical switch serves as the good replacement parts, specifically designed to be compatible with for Mega i3, for Mega S, and a variety of other 3D printers. This compatibility ensures a seamless fit and optimal performance in your printing setup. 2. Clear Interface Specifications: The 3D printer mechanical limit switch module features a straightforward interface with labels for S-SIG (signal), G-GND (ground), and V-VCC (voltage). This clear labeling simplifies wiring, making installation and integration into your 3D printing machine quick and easy. 3. User Friendly Integrated Plug Design: With its integrated plug design, this end stop limit switch is easy to install and remove, reducing the risk of breakage during the plugging and unplugging process. This focusing on convenience ensures secure installation, preventing any unintended movement after setup. 4. Rugged PCB Construction: Made from excellent PCB materials, this 3D printer end stop limit switch is built to last. Its durability provides assurance that it can withstand the rigors of continuous use in 3D printing applications, contributing to the long term performance of your 3D printer. 5. 1M Photoelectric Control: The 3D printer switch module is equipped with a 1M photoelectric control feature, providing accurate position detection. This enhances the overall functionality of your 3D printer by ensuring that print heads accurately return to their home position, improving print quality and reliability. Specification: Item Type: End Stop Limit Switch Material: PCB Application: for Mega i3. Package List: 4 x End Stop Limit Switches