No. of H Beams 4
No. of V Beams 4
Plumb Laser ok
Tangent Screw ok
Wave Length 635nm
Operating Temperature -10C ~ +50C
Working Range Indoor: 20m; Detector: 50m
Self-leveling Method Electromechanical Leveling
Leveling Accuracy 1mm/10m
Power Supply 1.5V AA batteries X 3
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