Wide Application: This for bltouch kit is suitable for 3 v2/5 pro/-10 3d printer with 32-bit v4.2.2 or v4.2.7 motherboard. Requires a 3d printer with a 32-bit v4.2.2 or v4.2.7 motherboard.Firmware installation is simple: download for the touch firmware from the website and copy it to the tf/sd card, directly insert the tf/sd card and power cord.Then press the switch. Wait a few seconds for the firmware to install. Note: Each machine has own operating interface.High precision: The standard deviation of for -touch is about 0.005mm, which is easy to level and has high precision.For The Bltouch bed automatic leveling sensor has a simple structure and high precision.Uses: Suitable for all kinds of bedding such as glass, wood, metal, plastic and all materials.Easy to install: For The -touch sensor is small and easy to print when connected.Accurately measure the inclination of the hot bed and automatic z centerline compensation to avoid unevenness of the hot bed and stable printing.colour: as shown: Metal+PlasticPackage Contents:1 x Auto level sensor1 x screw pack1 x 1.25-5P-SYP2P+3P line (170mm)1 x 1.25-XH2P 3P cable (1.5m)4 x 1 x Sensor fixing bracketOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.