12 line laser Self leveling or Manual mode for your alignment needs from different angles, long press (on /off ) button can unlock the pendulum, the 12 line laser level will self-level within 3°.Applicable scenes : construction site, construction office, interior decoration, wall painting. It could be a great work partner while working on decorating and constructing. Please avoid using it in bright sunlight to avoid affecting measurement accuracy. Waterproof and one piece machine body design to protect the inner parts from dust and other micro particles in the air. 3D 12 line laser level has 1 X 360° Horizontal Line and 2 X 360° Vertical Lines which enable users to cover the floor, wall, ceiling all around the room. The three laser lines can be selected individually depends on job site applications. 360°rotatable base, and equipped with fine adjustment mechanism, can make the machine quickly find the target. Under the same lighting conditions, The green laser level beam is quadruple as bright as the red beam. Accuracy: ±0.2mm/m, Input 110-240V AC, 50/60Hz 0.3A, Output: 5V DC2.5A.