Cross Line Laser Kit Accuracy +/-1/8 in @ 30 ft Battery Type Alkaline Features This Self-Leveling Cross Line Laser Level is Equipped for Multiple Applications Including Wall Construction Acoustic Ceiling Installation Tile Installation Residential and Commercial Construction Includes Case Floor Stand Target Bracket Number of Beams 2 Number of Planes 0 Number of Dots 4 Number of Lines 2 Working Range with Detector - Maximum 200 ft Working Range without Detector - Maximum 50 ft