Features: Achieve precise positioning with this limit Switches, a must have for your 3D printer. Experience fast response and long lasting performances with this sensitive limit Switches. Limit Switches is Hall effect based Sensors that accurately detects the position and motion of objects. It is characterized by highly sensitivity, fast response, long life, waterproof and dustproof, and is suitable for a variety of industrial automation equipment. Suitable for position detection, limit control, safety protection and other application scenario in 3D printers and other equipment. Specifications: Item:Limit Switches Board For 3D Printers Limit Switches Size:about 5.5x2cm/2.17x0.79in Note: Due to light and screen difference, the item color may be slightly different from the pictures. Please allow 0.5-2cm differences due to manual measurement. Package includes: 1PC Limit Switches Board