1. Introduction
Thank you for choosing the CROWN CT44035 Laser Distance Meter. This device is designed for precise and rapid distance measurements, offering various functions for professional and DIY applications. Please read this manual thoroughly before operating the device to ensure safe and correct usage.
2. Safety Information
WARNING: Laser Radiation. Do not stare into the beam. Class 2 Laser product.
- Do not look directly into the laser beam or point it at others.
- Avoid operating the device in explosive environments.
- Keep the device out of reach of children.
- Do not attempt to modify or disassemble the device. Repairs should only be performed by authorized service personnel.
- Use only specified batteries.
- Protect the device from moisture, dust, and extreme temperatures.
3. Product Overview
3.1 Device Components
The CROWN CT44035 features a robust design with intuitive controls.
This image displays the front of the CROWN CT44035 Laser Distance Meter, showing its digital screen, control buttons including ON/OFF, MENU, UNITS, plus/minus, and measurement function buttons. The device has a gray and black casing.
- Digital Display: Shows measurements, units, battery status, and mode indicators.
- ON/MEASURE Button: Powers on the device and initiates measurements.
- MENU Button: Accesses various measurement functions (Area, Volume, Pythagorean, etc.).
- UNITS Button: Changes measurement units (m, ft, in).
- '+' / '-' Buttons: Used for navigation or adding/subtracting measurements.
- C/OFF Button: Clears the last measurement or powers off the device.
- Reference Point Button: Changes the measurement reference point (front/rear of device).
3.2 Display Indicators
The digital display provides essential information during operation:
- Measurement Value: Displays the current distance, area, or volume.
- Unit Indicator: Shows the selected unit (m, ft, in).
- Battery Indicator: Shows remaining battery life.
- Mode Indicator: Icons representing active measurement modes (e.g., single, continuous, area, volume, Pythagorean).
- Reference Point Indicator: Shows if measurement is from the front or rear edge of the device.
4. Setup
4.1 Battery Installation
The device requires two AAA batteries for operation. Batteries are included with the product.
The back of the CROWN CT44035 Laser Distance Meter features a yellow warning label for Class 2 laser radiation, indicating <1 mW at 650 nm. It also shows the model number CT44035, battery type (2x 1.5V AAA), and regulatory markings like CE and EAC.
- Locate the battery compartment cover on the back of the device.
- Slide the cover open in the direction indicated by the arrow.
- Insert two 1.5V AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
5. Operating Instructions
This image shows the CROWN CT44035 Laser Distance Meter being held in a hand, providing a visual reference for its compact dimensions. A ruler graphic indicates a height of approximately 4.8 inches (12 cm), highlighting its portability.
5.1 Power On/Off
- To Power On: Press the ON/MEASURE button. The laser will activate.
- To Power Off: Press and hold the C/OFF button for a few seconds. The device will also automatically power off after a period of inactivity to conserve battery.
5.2 Basic Single Measurement
- Press the ON/MEASURE button to activate the laser.
- Aim the laser dot at the target point.
- Press the ON/MEASURE button again. The measured distance will appear on the display.
5.3 Continuous Measurement (Tracking)
- Press the ON/MEASURE button to activate the laser.
- Press and hold the ON/MEASURE button (or press twice quickly, depending on firmware) to enter continuous measurement mode. The display will show real-time distance updates as you move the device.
- Press the ON/MEASURE button again to stop continuous measurement.
5.4 Area Measurement
- Press the MENU button until the area measurement icon appears on the display.
- Take the first measurement (e.g., length) by aiming and pressing ON/MEASURE.
- Take the second measurement (e.g., width) by aiming and pressing ON/MEASURE.
- The device will automatically calculate and display the area.
5.5 Volume Measurement
- Press the MENU button until the volume measurement icon appears.
- Take the first measurement (length) by aiming and pressing ON/MEASURE.
- Take the second measurement (width) by aiming and pressing ON/MEASURE.
- Take the third measurement (height) by aiming and pressing ON/MEASURE.
- The device will automatically calculate and display the volume.
5.6 Pythagorean Measurement (Indirect Measurement)
This mode allows for indirect measurement of heights or distances using the Pythagorean theorem.
- Press the MENU button until the desired Pythagorean icon appears (e.g., for two-point or three-point measurement).
- Follow the on-screen prompts to take the required measurements (e.g., hypotenuse, base).
- The device will calculate and display the unknown side.
5.7 Unit Conversion
To change the measurement units (meters, feet, inches):
- Press the UNITS button repeatedly to cycle through the available units (m, ft, in). The selected unit will be displayed.
5.8 Changing Reference Point
The device can measure from its front or rear edge. To change the reference point:
- Press the Reference Point button (often indicated by an icon showing the device with an arrow). The display will show an icon indicating the current reference point.
6. Maintenance
- Cleaning: Use a soft, damp cloth to clean the device. Do not use abrasive cleaners or solvents. Pay special attention to keeping the laser lens clean.
- Storage: Store the device in a dry, cool place, away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries to prevent leakage.
- Battery Replacement: Replace batteries when the low battery indicator appears on the display. Dispose of old batteries responsibly.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Dead or incorrectly inserted batteries | Check battery polarity; replace batteries. |
| "Error" message on display | Measurement out of range, strong light interference, or target surface not reflective enough. | Ensure target is within range (0.05-100m). Avoid strong light. Use a reflective target if needed. |
| Inaccurate measurements | Laser lens dirty, incorrect reference point, or unstable measurement. | Clean laser lens. Verify reference point setting. Ensure device is stable during measurement. |
| Laser not visible | Strong ambient light or laser not activated. | Move to a darker area. Press ON/MEASURE button to activate laser. |
8. Specifications
| Feature | Specification |
|---|---|
| Measuring Range | 0.05 - 100 meters |
| Measuring Accuracy | ±2 mm |
| Time of Single Measurement | 0.25 seconds |
| Laser Type | 650 Nm |
| Laser Class | Class II, <1 mW |
| Operating Temperature Range | 0 °C to +40 °C |
| Storage Temperature Range | -20 °C to +65 °C |
| Battery Type | 2 x 1.5V AAA |
| Battery Life (approx.) | >5000 single measurements, >90 min continuous measurements |
| Weight | 107 g |
| Product Dimensions (L x W x H) | 17.5 x 12.8 x 4.2 cm |
| Material | Plastic |
| Color | Gray/Black |
9. Warranty and Support
CROWN products are manufactured to high-quality standards. For warranty information, please refer to the warranty card included with your purchase or contact your local CROWN distributor. For technical support or service inquiries, please contact the retailer where the product was purchased.
