Laser level. Approximately 50 to 165 ft range with detector. 1/8 inch accuracy. 3 AA batteries power supply. 4° self-levelling range. IP54 IP rating. Laser class II. 2 spot and line lasers. Self levelling cross line and plumb spots. Projects bright crossing horizontal and vertical lines 2 bright, self levelling beams provide accurate plumb point transfer. Projects down beam with raised clearance provides dot visibility and alignment for wall track layout. Integrated magnetic pivoting base with 1/4 inch thread front and rear mounted magnets allow flush attachment to metal track and steel. Full-time pulse mode allows use with detector maintains full brightness for visibility. Locking pendulum to help prevent damage to internal components. Durable design over-moulded housing and IP54 water/debris resistance.