Product Name:Lerdge Optical Endstop Color:BlackPackage Included:Module*1PCS、With 1M Cable*1PCSThe optical switch is a reliable stop/switch solution for any type of 3D printer/CNC/3D tool.Advantages: Using optically transmissive principles of design, no loss, no noise, and longer life(more than one hundred thousand times).Triggering is sensitive and quietRepeat positioning is in high accuracy.Tips: Generally, the system need at least three optical switches.We have full confidence in the quality of our products and can respond within 24 hours and guarantee your satisfaction.