Item Type: End Stop Limit Switch Material: PCB Power Supply: 3 Pin Switch Type: Normally open Adaptation: For Ender 3, for Ender 3 S, for Ender 3 Pro, for Ender 3 V2, for Ender 3 Maximum, for CR 10, for CR 10 V3, for CR 10 S4 and other appropriate 3D printers Package List 5 x End Stop Limit Switch General printer DIY system requires at least three optical switches. 1APPLICABLE MODELS: This limit switch is specially used for Ender 3, for Ender 3 S, for Ender 3 Pro, for Ender 3 V2, for Ender 3 Maximum, for CR 10, for CR 10 V3, for CR 10 S4 and more 3D printers. 2PERFECT SUBSTITUTE: This is a perfect replacement part for your 3D printer, which can directly replace your broken limit switch. 35 PCS SET: The set contains 5 pcs end stop limit switches, 3 Pin, NO NC controls, with the rated load of AC 250V 1A. 4PLUG AND PLAY: This limit switch with cable is compact in size, convenient to install, plug and play, easy to use. 5HIGH RELIABILITY: Adopt flame retardant material and special technology, with high safety and great stability, ensures excellent performance of your printer.