1. 3 pieces in per set (one sagital line laser and two cross line laser);
2. Laser power: 1mv;
3. Laser wavelength: 650nm;
4. Line width projection light: 1mm at 2.5m;
5. Adjustment range: parallel shift ±20mm, angle shift ±12°, rotation around the axis ±15°;
6. Power: 220V±10% 50Hz;
7. Weight: 1.5kg.