Leica LINO L2 Laser Level Self Leveling Cross Line with Pulse, Red/Black This unit contains a Class II Laser with 1mW output Projects bright red crossing horizontal and vertical lines up to 45ft IP54 rated dust-proof and splash-protected Exact 90 angle: Alignment work, such as marking 90 angles, is performed at the touch of a button. Self-Leveling Feature lets you know your line is out of level by blinking Pendulum Lock feature to manually switch off the self-levelling so the laser line can be projected at any angle