1. Introduction
The DUKA LS3 Laser Distance Meter is a compact and precise measuring tool designed for various applications, from home renovations to professional construction. It integrates 17 practical functions, 8 measurement modes, and 3 measurement units to provide fast, accurate, and stable measurements. This manual provides essential information for the safe and effective use of your device.
Figure 1: DUKA LS3 Laser Distance Meter
2. Safety Information
Please read and understand all safety instructions before using the DUKA LS3 Laser Distance Meter.
- Laser Safety: This device uses a Class II laser (630-670nm, <1mW). Do not stare directly into the laser beam or direct it at other people or reflective surfaces.
- Children: Keep the device out of reach of children.
- Operating Environment: Use the device within the specified operating temperature range (0-40°C). Avoid extreme temperatures, humidity, or dusty environments.
- Maintenance: Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
3. Product Overview
The DUKA LS3 features a compact, integrated thick body made of durable ABS + PC material, designed for comfortable handling and resistance to scratches and drops.
Figure 2: Front View
Figure 3: Side View
Controls and Display
- Power On/Off / Measurement Key: Short press to start up; Long press to shut down; Short press to measure.
- Mode/Reference Key: Short press to select measurement mode; Long press to switch the benchmark (front/rear).
- Record/Unit Key: Short press to query historical data; Long press to switch measurement units (m-ft-in).
- Display: 2.0-inch high-brightness screen, clear and visible even under sunlight.
- Physical Horizontal Bubble: Integrated for accurate leveling.
Figure 4: High-Brightness Display
4. Setup
Battery Installation
The DUKA LS3 uses two AAA 1.5V alkaline dry batteries. To install or replace batteries:
- Locate the battery compartment cover on the device.
- Open the cover and insert two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
Figure 5: Battery Compartment
5. Operating Instructions
Power On/Off
- Power On: Short press the Power On/Off / Measurement Key.
- Power Off: Long press the Power On/Off / Measurement Key. The device also features an automatic shut-down after 180 seconds of inactivity.
Measurement Modes
The DUKA LS3 offers 17 practical functions and 8 measurement modes. Use the Mode/Reference Key to cycle through the available modes.
Figure 6: Key Functions Overview
Figure 7: Measurement Modes
- Single/Continuous Measurement: For basic distance measurements.
- Area Measurement: Calculate the area of a surface.
- Volume Measurement: Determine the volume of a space.
- Primary/Secondary Pythagorean: For indirect measurements using the Pythagorean theorem.
- Max/Min Measurement: Track maximum and minimum distances in continuous measurement.
- Accumulation/Subtraction: Add or subtract measurements.
Unit Switching
Long press the Record/Unit Key to cycle through measurement units: meters (m), feet (ft), and inches (in).
Benchmark Selection
Long press the Mode/Reference Key to switch the measurement benchmark between the front edge and the rear edge of the device.
Data Storage and Query
The device can store up to 10 sets of historical data. Short press the Record/Unit Key to query stored measurements.
Figure 8: Historical Data Query
6. Specifications
| Feature | Specification |
|---|---|
| Product Name | LS3 Laser Range Finder |
| Product Size | 114 x 50 x 25 mm |
| Measurement Range | 0.05 - 60m / 80m (model dependent) |
| Measurement Accuracy | ±(2mm + d*1/10000) |
| Measurement Units | m / ft / in |
| Battery Type | 2 x AAA 1.5V Alkaline Dry Batteries |
| Max Battery Life | 7000 measurements (with alkaline batteries) |
| Laser Type | Grade II, 630-670nm, <1mW |
| Operating Temperature | 0 - 40°C |
| Automatic Shut-down | 180 seconds |
| Boot Speed | 0.01 seconds |
| Measuring Speed | 0.1 seconds |
| Material | ABS + PC |
| Display | 2.0-inch High-Brightness Screen |
Figure 9: Detailed Specifications
7. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place when not in use. Remove batteries if storing for extended periods to prevent leakage.
- Protection: Avoid dropping the device or exposing it to strong impacts.
8. Troubleshooting
- Device not turning on: Check if the batteries are correctly installed and have sufficient charge. Replace batteries if necessary.
- Inaccurate measurements: Ensure the laser lens is clean. Verify the correct benchmark (front/rear) is selected. Ensure the target surface is suitable for laser reflection.
- Display issues: If the display is dim or flickering, replace the batteries.
9. User Tips
No specific user tips from reviews or Q&A were provided for this product. However, general tips for laser distance meters include:
- For best accuracy, ensure the device is stable and level during measurement.
- When measuring long distances or in bright conditions, a reflective target plate can improve accuracy and range.
- Familiarize yourself with all measurement modes to maximize the device's utility for different tasks.
10. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the point of purchase. Keep your proof of purchase for any warranty claims.
