Firecore F112R Self-Leveling Horizontal/Vertical Cross-Line Laser Level with Magnetic Bracket One-button operation mode. Two laser tubes can alone operate one vertical line and one horizontal line and cross light, suitable for different usage modes and accuracy is more accurate and stable. Professional accuracy. 3mm at 10m(1/8 In. at 30 Ft), Class II laser product, Output &lt; 1mW Over-molded housing and IP54 water-resistant design to protects the unit from water splashes, dust and construction debris. 1m drop test. The F112R can withstand the impact and wear of standard work sites. Multiple operational uses. Come with magnetic bracket, make easier to install floors, closets, retaining walls, tiles and pipes indoors. Laser beam can be projected at any angle in manual mode, such as projection for stair installation and guardrails. This mode works best when the tool is mounted on a 5/8" screw bracket. IP55 rated 1m drop test Self-Leveling in 4 1/4&#034; tripod Thread Operating Temperature:0 to 45 Working distance: 13MIn the standard environment