Additional data Working range, value 15 m Working range with receiver 15 m Accuracy Horizontal laser line: ± 0.2 mm/m ; Vertical laser lines: ± 0.3 mm/m Colour of laser line Red Laser diode 630 – 650 nm, < 1mW Operating temperature -10 – 45 °C Storage temperature -20 – 70 °C Laser class 2 Working range of laser points, max. 5 m (bottom) Self-levelling range ± 3° Levelling time 4 s Power supply 4 x 1.5 V LR6 (AA) Operating time (max.) 24 h Weight, approx. 0.72 kg Color of plumb points Red Projection 3 lines + 1 plumb point Plumb point accuracy ± 0.7 mm/m