DEWALT DW0811 Self Leveling 360 Degree Line and Vertical Line Laser Simulates functionality of rotary laser and projects bright crossing horizontal and vertical lines Vertical-adjust base for easy set-up and fine tune adjustments Full-time pulse mode allows use with detector maintains full brightness for visibility Durable design over-molded housing and IP54 water/debris resistance Locking pendulum to help prevent damage to internal components Laser Class 1, Output &lt; 1mW, 630-680 nm