EASY TO USE: This auto bed leveling sensor makes it easier to level the hotbed, which can precisely measure the tilt of the Bed surface. Bed leveling is not a problem anymore.INTELLIGENCE SELF-CHECK AND ALARM: The function of auto leveling is adopted to make it easier to use and to increase the success rate of shaping.ALARM: The auto bed leveling sensor LED light blinks if a problem was found on a self-test or during operation.SELF-TEST: The push pin operates two times in a test when the auto bed leveling sensor power is on.WIRING DEFECT INDICATOR: auto bed leveling sensor built in Blue and Red LED compatible with indicating wiring defects.Colour: as shownMaterial: metal + plasticPackage Contents:1 * Auto level sensor2 * Cable ties1 * Screw pack1 * 1.25-XH-5P DuPont 3P cable (1.5m)1 * TF to SD extension cable1 * Sensor fixing bracketOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.