Alignment Level: Yes Height: 122 mm Laser Beam coverage: 4 ° Laser Class: Class 2 Laser Colour: Red Laser Wavelength: 650 nm Length: 136 mm Levelling Accuracy: ±0.3 mm/m Levelling Type: Self-Levelling Maximum Operating Temperature: -10 °C Minimum Operating Temperature: 50 °C Model Number: GCL 2-50 C Number of Lasers: 3 Power Source: Battery Product Type: Line Laser Standards/Approvals: No Waterproof IP Rating: IP54 Weight: 600 g Width: 136 mm Working Environment: Indoor and Outdoor Working Range: 20 m