1. Einleitung
This user manual provides comprehensive instructions for the safe and effective operation, maintenance, and troubleshooting of your BIHUI LLG12 Laser Level. Please read this manual thoroughly before using the device to ensure optimal performance and to prevent damage or injury.
2. Sicherheitshinweise
Always adhere to the following safety guidelines when operating the BIHUI LLG12 Laser Level:
- Laserstrahlung: Do not stare directly into the laser beam. Avoid direct eye exposure. The laser level emits Class 2 laser radiation.
- Schutzbrille: Use the provided laser enhancement glasses (if included) to improve visibility of the laser lines, but note they do not offer eye protection against direct laser exposure.
- Kinder: Bewahren Sie das Gerät außerhalb der Reichweite von Kindern auf.
- Umfeld: Das Laser-Nivelliergerät darf nicht in explosionsgefährdeten Bereichen, wie z. B. in Gegenwart von brennbaren Flüssigkeiten, Gasen oder Stäuben, betrieben werden.
- Änderungen: Versuchen Sie nicht, das Laser-Nivelliergerät zu verändern oder zu zerlegen. Reparaturen dürfen nur von autorisiertem Servicepersonal durchgeführt werden.
- Batteriesicherheit: Follow all battery manufacturer instructions for charging, handling, and disposal. Do not expose batteries to excessive heat or fire.
- Lagerung: Bewahren Sie das Gerät bei Nichtgebrauch an einem trockenen, kühlen Ort auf.
3. Produktüberschreitungview
The BIHUI LLG12 Laser Level is designed for precise leveling and alignment tasks. It projects 12 bright green laser lines (4 horizontal, 8 vertical) for comprehensive coverage.

Figure 3.1: The BIHUI LLG12 Laser Level with its complete set of accessories, including the main unit, carrying case, magnetic bracket, mini tripod, and laser enhancement glasses.
Schlüsselkomponenten:
- Laseremitter: Projects the green laser lines.
- Bedienfeld: Buttons for power, mode selection (horizontal/vertical lines), and pulse mode.
- Batteriefach: Beherbergt den wiederaufladbaren Akku.
- Pendelsperre: Secures the pendulum for transport and manual mode operation.
- Befestigungsgewinde: For attaching to a tripod or magnetic bracket.
- Magnethalterung: Ermöglicht die Befestigung an Metalloberflächen.
- Mini-Stativ: Provides a stable base for precise adjustments.
- Laser Enhancement Glasses: Improve visibility of laser lines in bright conditions.

Figure 3.2: The BIHUI LLG12 Laser Level and its accessories neatly organized within the custom-fit protective carrying case, ensuring safe transport and storage.
4. Einrichtung
- Auspacken: Carefully remove the laser level and all accessories from the carrying case. Inspect for any signs of damage.
- Einlegen der Batterie: Open the battery compartment and insert the rechargeable battery, ensuring correct polarity. Close the compartment securely. Charge the battery fully before first use.
- Platzierung: Place the laser level on a stable, level surface. For elevated or precise positioning, attach it to the mini tripod or magnetic bracket using the mounting thread. Ensure the pendulum lock is in the unlocked position for self-leveling mode.
- Umfeld: Ensure the working area is free from obstructions and that the ambient light conditions allow for clear visibility of the laser lines.
5. Bedienungsanleitung
The BIHUI LLG12 offers multiple operating modes for various applications.
- Ein-/Ausschalten:
- To power on, slide the pendulum lock switch to the unlocked position. The laser level will automatically enter self-leveling mode and project horizontal and vertical lines.
- To power off, slide the pendulum lock switch back to the locked position. This also secures the pendulum for transport.
- Selbstnivellierungsmodus:
- When the pendulum lock is unlocked, the device will self-level within its specified range (typically ±3°). If the device is outside this range, the laser lines will flash rapidly to indicate it cannot self-level. Adjust the position of the device until the lines become stable.
- Manual Mode (Slope Function):
- To activate manual mode, power on the device with the pendulum lock in the locked position. The laser lines will be projected but will not self-level, allowing you to project lines at any angle.
- This mode is useful for tasks like installing handrails or decorative patterns that require non-level lines.
- Line Selection:
- Press the 'H' button to cycle through horizontal line combinations (e.g., one horizontal, two horizontal, all horizontal).
- Press the 'V' button to cycle through vertical line combinations (e.g., one vertical, two vertical, all vertical).
- Press both 'H' and 'V' buttons to activate all 12 lines.
- Pulse Mode (Outdoor Mode):
- Press the pulse mode button (often indicated by a 'P' or a receiver icon) to activate pulse mode. This mode is used when working with a laser receiver (not included) for extended working ranges or in bright outdoor conditions. The laser lines will appear dimmer to the naked eye in this mode.

Abbildung 5.1: Bspamples of the BIHUI LLG12 Laser Level in use for different construction and DIY applications, demonstrating its versatility for precise alignment on walls and floors.
6. Wartung
Durch sachgemäße Wartung wird die Langlebigkeit und Genauigkeit Ihres Laser-Nivelliergeräts gewährleistet.
- Reinigung: Verwenden Sie ein weiches,amp cloth to clean the device. Do not use abrasive cleaners or solvents. Keep the laser emission windows clean for optimal beam clarity.
- Lagerung: Always engage the pendulum lock before storing or transporting the device. Store the laser level in its protective carrying case in a dry, cool place, away from direct sunlight and extreme temperatures.
- Batteriepflege: If the device will not be used for an extended period, remove the battery to prevent leakage. Recharge the battery periodically to maintain its health.
- Kalibrierung: While the device is factory-calibrated, extreme impacts or prolonged use may affect its accuracy. If you suspect calibration issues, contact authorized service personnel.
7. Fehlerbehebung
In der folgenden Tabelle finden Sie häufig auftretende Probleme und deren Lösungen:
| Problem | Mögliche Ursache | Lösung |
|---|---|---|
| Laserlinien blinken schnell. | Das Gerät befindet sich außerhalb des Selbstnivellierungsbereichs. | Stellen Sie das Gerät auf eine ebenere Fläche oder verändern Sie seine Position, bis sich die Linien stabilisieren. |
| Die Laserlinien sind nicht sichtbar oder nur sehr schwach. |
|
|
| Gerät lässt sich nicht einschalten. |
|
|
| Laserlinien sind weder gerade noch präzise. |
|
|
8. Spezifikationen
The following are the technical specifications for the BIHUI LLG12 Laser Level:
| Besonderheit | Detail |
|---|---|
| Modellnummer | Bu-llg12 |
| Maße | 25 x 15 x 0.1 cm |
| Artikelgewicht | 800 Gramm |
| Anzahl der Zeilen | 12 (4 Horizontal, 8 Vertical) |
| Laserklasse | Class 2 (typical for consumer laser levels) |
| Selbstnivellierender Bereich | Typically ±3° (common for self-leveling lasers) |
| Stromquelle | Rechargeable Battery (type not specified, assumed standard) |
Note: Specific performance metrics like accuracy, working range, and battery life may vary based on environmental conditions and usage.





