Feature: 1. The millimeter‑level accuracy dial accurately positions the vertical line to reduce errors and improve work efficiency. 2. Low refraction, good light transmission, use. Optical glass, high transmittance and no other variegated colors 3. The flexible multi‑mechanism pendulum body has passed strict balance tests to ensure the pendulum is stable and accurate even if it vibrates randomly. 4. The equipment will be self‑leveling, put the line level on a more level place, and automatically level within an inclination of <4°. 5. Multiple protection performance is more stable, protection grade IP54. Suitable for wall construction, photo hanging, etc. 6. The light source is thin, the penetrating power is strong, the eyes are clear, not blurry, and not dazzling. The locking mechanism protects internal parts and allows manual mode. Specification: Item Type: Line Level Material: Plastic Color: As shown in the picture Model: T08 Laser Beam: One horizontal and one vertical (the vertical line crosses the ceiling) Number of Laser Diodes: 2 Beam Color: Green Laser Wavelength: 505-550nm Laser Power (H/V): 10mw Accuracy (H/V): ±1.5mm/5m Energy-Saving Mode: 9-gear energy-saving mode can save power Automatic Compensation Range: 4°±1° IP Rating: IP54 Laser Class: Class 2 Working Temperature: -10~50℃ Storage Temperature: ﹣25~70℃ Working Range: 30m Working Range with Receiver: 50m Beam Launching Angle (H/V): 130°/120° Battery: 4x1.5V AA battery (not included) Working Time: About 10 hours in the 1st gear, about 40 hours in the 10th gear . Package List: 1 x Line Level(Battery Not Included)1 x Storage Bag1 x Bracket1 x Instruction Manual