The new PLS 6 and PLS 180 red and green laser laser levels offer the durability and precision you expect from PLS, a Fluke company. We replaced the PLS 4 red laser model with PLS 6, in red and green versions. The fast-stabilizing/self-leveling pendulum provides accurate point and line references instantly. In addition, these products feature a pendulum lock to secure the laser during transport or in case of a possible fall.