The PREXISO XL2 Cross Line Laser can be used wherever accurate verticals and horizontals are required for alignment. Water-level and line drawing on walls become redundant. Self-levelling It is not necessary to align the device tediously to obtain horizontal or vertical lines. The PREXISO XL2 compensates over a range of +/- 5 deg automatically. Perfect along the line Whether horizontal, vertical or crossed - the red lines are a reliable reference to align everything in your room. Easy to use The PREXISO XL2 is intuitive to operate due to one button only. Lock-function Lock for projecting at any angle and transport protection. Uses 3 AA batteries (included). Working hours 16+ with both lines on with a single set of batteries.