*self-leveling with magnetic pendulum. *5beams & 1v, 1h(cross over the ceiling) , laser lines have a large fan angle (150¡ã) . *high visibility laser line .Full orientations, high stability, handeling. *laser lines & laser dots can be combined or independent for operation. *in /outdoor function for option.(working with laser detector). *laser line or laser dots blink if the unit is out of the self-leveling rang. *center locking system to lock the pendulum while in transportation to avoid the vibration(patent). *compact size and handling housing with elastomeric rubber for easy carrying. *multi-function wall mount & base & fine adjusting screws to cooperate with Lp106 for extended application.