Line Laser Bosch GLL 3-80 Professional is a robust 3 × 360° professional line laser designed for simultaneous horizontal and vertical levelling around an entire room. Its high-powered laser diodes provide clear red laser lines, while the tool automatically self-levels within ±4° in approximately 4 seconds. With a compatible laser receiver, the working range can reach 120 m. Ideal for: Suspended ceilings, floor installation, window installation, shelf mounting, drainage-pipe alignment, drywall framing, tile installation and general interior construction work. Technical Specifications Working Range: 15 m Working Range with Receiver: Up to 50 m Number of Lines: 5 lines + 1 plumb point Beam Colour: Red Horizontal Accuracy: ±0.2 mm/m Vertical Accuracy: ±0.3 mm/m Plumb Point Accuracy: ±0.7 mm/m Self-Levelling Range: ±3° Levelling Time: <4 seconds Laser Class: Class 2 Laser Wavelength: 630–650 nm Power Supply: 4 × 1.5 V AA batteries Operating Time: Up to 24 hours Weight: Approx. 0.54 kg Tripod Thread: 5/8 inch Protection: IP54