DEWALT DW0892-Line Laser DetectorThe DW0892 Line Laser Detector works up to 165 feet away. Detector includes a backlit LCD and a heavy duty clamp for mounting on a grade rod. Includes 9V battery Heavy Duty Detector Clamp Features Working range up to 165 ft Backlit LCD Heavy duty clamp for mounting on a grade rod Magnets allow detector to be mounted on metal tracks Specifications BATTERY QTY 1. 0 Warranty 3 Year Limited Warranty 1 Year Free Service 90 Days Satisfaction Guaranteed