Specification overview Laser diode 630 – 650 nm, < 1mW Operating temperature -10 – 50 °C Storage temperature -20 – 70 °C Laser class 2 Working range 15 m Accuracy ± 0.3 mm/m Working range of laser points, max. 10 m (top) , 10 m (bottom) Self-levelling range ± 4° Levelling time 4 s Dust and splash protection IP 54 Power supply 3 x 1.5 V LR6 (AA) Operating time (max.) 6 h in cross line and point mode , 8 h in cross line mode , 12 h in line and point mode , 16 h in line mode , 22 h in point mode Tripod thread 1/4", 5/8" Weight, approx. 0.49 kg Colour of laser line red Projection 2 lines / 2 points Plumb point accuracy ± 0.7 mm/m