Huepar B03CG Pro & LR-5RG
Huepar 3 x 360 Laser Level (B03CG Pro) & LR-5RG Laser Detector User Manual
Model: B03CG Pro & LR-5RG
1. Introduction
This manual provides detailed instructions for the safe and effective operation, setup, maintenance, and troubleshooting of your Huepar 3 x 360 Laser Level (B03CG Pro) and Huepar LR-5RG Laser Detector. Please read this manual thoroughly before using the product to ensure optimal performance and safety.
Package Contents
- 1 x Huepar B03CG Pro Laser Level
- 1 x Rechargeable Lithium Battery 3.7V / 5200mAh
- 1 x Type-C Power Cord
- 1 x Power Adapter
- 1 x 360° Magnetic Pivoting Base
- 1 x Green Laser Target Plate
- 1 x Multilingual User Manual
- 1 x Hard Carry Case
- 1 x Huepar LR-5RG Digital Laser Detector
- 1 x Heavy-duty clamp
- 2 x AA Batteries (for LR-5RG)
2. Safety Information
Always observe the following safety precautions to reduce the risk of injury and damage to the product.
- Laser Class 2: This product emits Class 2 laser radiation. Do not stare directly into the laser beam. Avoid direct eye exposure.
- Do not disassemble, modify, or attempt to repair the laser level or detector. This may cause serious injury and will void the warranty.
- Keep the device out of reach of children.
- Use only the specified power adapter and battery.
- Do not operate the device in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust.
- Protect the device from extreme temperatures, strong vibrations, and direct sunlight.
3. Product Overview
Huepar B03CG Pro Laser Level
The Huepar B03CG Pro is a 3 x 360° green laser level designed for precise leveling and alignment tasks. It features a bright green laser for enhanced visibility.
- 3 x 360° Laser Lines: One horizontal and two vertical 360° laser planes for full room coverage.
- Green Laser Technology: Utilizes bright Osram's green laser unit for higher stability and visibility, up to 85 feet (300LUX).
- Self-Leveling Mode: Automatically levels within ±4° when the pendulum is unlocked.
- Manual/Tilt Mode: Allows locking lines for use at any angle when the pendulum is locked.
- Outdoor Pulse Mode: Extends working range up to 200 feet with a compatible laser detector.
- Durable Design: Covered by TPR soft rubber for protection, IP54 water/dust proof.

Huepar LR-5RG Laser Detector
The Huepar LR-5RG is a digital laser detector designed to work with Huepar pulse line lasers, extending their working range.
- Compatibility: Detects Red and Green pulse laser beams.
- Working Distance: Up to 200 feet (typical) depending on light source.
- Large Reception Window: 2 inches for quick and accurate laser plane location.
- Dual LCD Display: Provides visual readout on both sides of the receiver.
- LCD Backlight: Ensures clear visibility in low light conditions.
- Adjustable Accuracy: Allows switching between high (≤2mm) and low (≤3mm) accuracy settings.
- Adjustable Volume: Buzzer volume can be set to loud, soft, or mute.

4. Setup
4.1 Powering the Laser Level
- Battery Installation: Open the battery compartment and insert the 3.7V / 5200mAh Li-ion battery, ensuring correct polarity.
- Charging: Connect the Type-C power cord to the laser level and the power adapter, then plug into a power outlet. The battery indicator will show charging status.
4.2 Mounting the Laser Level
The B03CG Pro offers versatile mounting options:
- Magnetic Pivoting Base: Attach the laser level to the included 360° magnetic pivoting base. This base can be securely mounted to metal surfaces or hung on a screw/nail.
- Tripod Mounting: The laser level features a 1/4"-20 mount thread on its bottom, allowing it to be mounted onto a standard tripod (tripod not included).

5. Operating the Laser Level
5.1 Self-Leveling Mode
When the pendulum is unlocked, the laser level will automatically self-level. If the device is out of its ±4° leveling range, the laser lines will flash rapidly to indicate an out-of-level condition. Adjust the position of the laser level until the lines stop flashing and become steady.
5.2 Manual/Tilt Mode
To use the laser level at any angle (e.g., for stair railing installation), lock the pendulum. This disables the self-leveling function and allows the laser lines to be projected at a fixed angle. The lines will not flash in this mode, indicating that they are not self-leveled.

5.3 Laser Line Switching Modes
The B03CG Pro allows you to select different laser line combinations based on your application needs. Press the mode button to cycle through the available options:
- 3 x 360° Laser Lines (all lines on)
- Horizontal + Vertical Lines
- 360° Horizontal Line only
- 360° Vertical Line only (one or two vertical lines)

5.4 Pulse Mode with LR-5RG Detector
For outdoor use or in bright light conditions, activate the Pulse Mode on the laser level by pressing the dedicated Pulse Mode Button. This enables the laser level to work with the Huepar LR-5RG Laser Detector, extending the working range up to 200 feet.
IMPORTANT: It is NECESSARY to turn ON the Pulse Mode of the Laser Level when using it with the Huepar LR-5RG laser receiver.

6. Operating the LR-5RG Laser Detector
6.1 Detector Features
- Dual LCD Display: Provides visual feedback on both the front and back of the detector.
- Backlight Feature: Illuminates the LCD for clear viewing in low-light conditions.
- Volume Adjustable: Cycle through loud, soft, or mute buzzer tones.
- Accuracy Adjustable: Switch between high and low accuracy settings for precise or quick measurements.
6.2 Using the Detector
When the laser level is in Pulse Mode, move the LR-5RG detector along the desired surface. The detector will provide visual and audible signals to help you locate the laser line:
- Arrows on LCD: Indicate whether the detector needs to be moved up or down to align with the laser line.
- Beeping Tones:
- Slower beeping tone: Detector is far from the laser line.
- Fast beeping tone: Detector is getting closer to the laser line.
- Continuous beeping tone: Detector is precisely on the laser line.


7. Maintenance
- Cleaning: Use a soft, damp cloth to clean the device. Do not use abrasive cleaners or solvents. Keep the laser output windows clean for optimal performance.
- Storage: Store the laser level and detector in their hard carry case in a dry, dust-free environment when not in use. Remove batteries if storing for extended periods.
- Battery Care: Recharge the Li-ion battery regularly, even if not in use, to maintain its lifespan. Avoid fully discharging the battery.
- Calibration Check: Periodically check the calibration of your laser level to ensure accuracy. Refer to the manufacturer's website or contact support for calibration procedures if needed.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Laser lines are flashing rapidly. | Laser level is out of its self-leveling range (±4°). | Place the laser level on a more level surface or adjust its position until the lines become steady. |
| Laser lines are dim or not visible outdoors. | Bright ambient light; Pulse Mode not activated. | Activate Pulse Mode on the laser level and use the LR-5RG Laser Detector. Use the target plate to enhance visibility. |
| LR-5RG Detector not detecting laser. | Laser level not in Pulse Mode; Detector batteries low; Detector too far from laser. | Ensure laser level is in Pulse Mode. Replace detector batteries. Move detector closer to the laser level. |
| Battery drains quickly. | All laser lines are on; Battery old or not fully charged. | Turn off unnecessary laser lines. Fully charge the battery before use. Consider replacing the battery if it's old. |
9. Specifications
9.1 Huepar B03CG Pro Laser Level
| Feature | Specification |
|---|---|
| Projection | 3 x 360° Green Laser Lines |
| Laser Class | Class 2 |
| Laser Wavelength | 505-520nm |
| Horizontal / Vertical Accuracy | ±1/9 Inch at 33 Feet |
| Leveling / Compensation Range | ±4° |
| Leveling Time | 3s |
| Working Distance | 85 feet (300 LUX), 200 feet with Huepar Laser Detector LR-5RG / LR-6RG |
| Power Source | 3.7V / 5200mAh Li-ion Battery |
| Reference Operating Time | About 8 hours with all laser beams on |
| Mount Size | 1/4"-20 |
| IP Rating | IP54 dust-proof, waterproof and shockproof |
| Operation Temperature Range | Between -10℃ and +50℃ |
| Storage Temperature Range | Between -20℃ and +70℃ |
9.2 Huepar LR-5RG Laser Detector
| Feature | Specification |
|---|---|
| Pulse duration | 50 µs ; PWM: 5:5 |
| Frequency | 10KHz |
| Display | Dual LCD Display |
| Leveling Accuracy (High) | ≤2mm (1/13in) |
| Leveling Accuracy (Low) | ≤3mm (1/9in) |
| Working Distance | 130ft~200ft (typical) depend on light source |
| Operating Time | 20 hours |
| Auto Power Off (with No Signal Detected) | 10min |
| Power Source | 2*AA Batteries (Alkaline) |
| Dimension (LxWxH) | 140mm×68mm×26mm |
| Weight | 140g |
10. Warranty and Support
The Huepar B03CG Pro Laser Level and LR-5RG Laser Detector come with a 2-Year Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or any questions regarding your product, please visit the official Huepar website or contact their customer service directly. Please have your product model number and purchase information ready when contacting support.
Huepar Official Store: Visit Huepar Store on Amazon
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