BlackMaterial: aluminum alloy chassis + engineering plasticsLeveling system: Electronic SensorWavelength: Vertical laser Horizontal laser: 808nmWorking distance: Radius: approximately 10mLeveling range: approximately ±4°Emitting angle: approximately 110°Horizontal accuracy: ±1mm/10mVertical accuracy: ±1mm/5mDown point accuracy: ±1mm/1.2mPerpendicular accuracy: 90°±