WANLUTECH LT-40 Mini Laser Distance Meter Instruction Manual

1. Johdanto

Thank you for choosing the WANLUTECH LT-40 Mini Laser Distance Meter. This compact and versatile tool is designed for accurate distance, area, and volume measurements, featuring multiple measurement modes and a clear LCD backlight. This manual provides essential information for safe and effective use of your device.

2. Tuote ohiview

2.1 Tärkeimmät ominaisuudet

Multiple Measurement Modes: Includes single, continuous, area, volume, and Pythagorean measurements.
Compact Design: Small size (5.6 x 1.2 x 2.1 cm) and lightweight (28g) with an aluminum alloy housing for portability.
Long Measuring Distance: Measures up to 131ft (40m).
USB Charging: Convenient micro-USB charging port.
LCD Backlight: Ensures clear data readability in various lighting conditions.
Selectable Reference Points: Choose between front or rear reference for measurements.
Unit Conversion: Switch between meters (m), inches (in), and feet (ft).

2.2 Laitteen osat ja näyttö

The following diagram illustrates the main components and display indicators of the LT-40 Laser Distance Meter.

Diagram showing the WANLUTECH LT-40 laser measure with labels for its buttons and display features, including single measurement, area measurement, front/back benchmark switch, continuous measurement, volumetric measurement, functions switch, Pythagorean measurement, power on, one key measurement, and power off/backlit button.

Figure 1: LT-40 Device Layout and Function Buttons

Yksityiskohtainen view of the WANLUTECH LT-40 laser measure display, indicating laser mode, front and rear reference points, battery indicator, laser strength, maximum value, minimum value, and current measurement value. Dimensions of 56mm length and 22mm width are also shown.

Figure 2: LT-40 Display Indicators and Dimensions

Pääpainike: Used for power on, single measurement, and confirming selections.
E/O-painike: Functions switch / Front-Rear reference switch.
Power Off / Backlit Button: Turns the device off and controls the LCD backlight.
Näyttö: Shows measurement values, units, battery status, laser strength, and measurement mode icons.

3. Asennus

3.1 Laitteen lataaminen

The LT-40 features a built-in Lithium-Ion battery and is rechargeable via a micro-USB port.

Connect the provided micro-USB cable to the device's charging port.
Liitä USB-kaapelin toinen pää tavalliseen USB-virtalähteeseen (ei sisälly toimitukseen) tai tietokoneen USB-porttiin.
The battery indicator on the display will show charging status. Charge fully before first use.

Image showing the WANLUTECH LT-40 laser measure connected via a micro-USB cable for charging, with a battery icon indicating USB charging.

Kuva 3: USB-latausportti

3.2 Powering On/Off and Backlight

Virta päälle: Paina lyhyesti pääpainiketta.
Virta pois: Long press the Power Off / Backlit button.
Taustavalon ohjaus: Short press the Power Off / Backlit button to toggle the LCD backlight on or off.

Close-up of the WANLUTECH LT-40 laser measure's LCD screen with backlight activated, displaying measurement data clearly in a dark environment.

Figure 4: LCD Backlight in Operation

3.3 Setting Measurement Reference Point

The device allows you to choose the measurement reference point:

Etuosan viite: Measurements are taken from the front edge of the device. The device's length is not included in the result.
Takaviite: Measurements are taken from the rear edge of the device. The device's length is included in the result.

To switch between reference points, short press the F/R button. An icon on the display will indicate the currently selected reference point.

3.4 Mittayksiköiden muuttaminen

The LT-40 supports meters (m), inches (in), and feet (ft).

To cycle through units, long press the F/R button. The unit displayed on the screen will change accordingly.

4. Operation - Measurement Modes

The LT-40 offers various measurement functions. To switch between modes, short press the F/R button until the desired mode icon appears on the display.

4.1 Yksittäinen mittaus

Measures the direct distance between the device and a target.

Kytke laite päälle.
Suuntaa laser haluttuun kohteeseen.
Short press the main button to emit the laser.
Short press the main button again to take the measurement. The result will be displayed instantly.

Illustration of single distance measurement using the WANLUTECH LT-40 laser measure, showing a single laser line extending to a wall.

Figure 5: Single Measurement

4.2 Jatkuva mittaus (seuranta)

Measures distances continuously as the device is moved, displaying real-time maximum and minimum values.

Kytke laite päälle.
Long press the main button for approximately 1 second to enter continuous measurement mode.
Move the device slowly. The display will update with real-time measurements, showing MAX and MIN values.
Short press the main button again to exit continuous measurement mode.

Illustration of continuous measurement using the WANLUTECH LT-40 laser measure, showing multiple laser points as the device is moved.

Figure 6: Continuous Measurement

4.3 Pinta-alan mittaus

Calculates the area of a rectangular surface by measuring two sides.

Select the Area Measurement mode (icon: rectangle).
Short press the main button to measure the first side (e.g., length).
Short press the main button again to measure the second side (e.g., width).
Laite laskee ja näyttää pinta-alan automaattisesti.

Illustration of area measurement using the WANLUTECH LT-40 laser measure, showing two measurements (length and width) used to calculate a shaded area.

Figure 7: Area Measurement

4.4 Tilavuuden mittaus

Calculates the volume of a space by measuring three dimensions.

Select the Volume Measurement mode (icon: cube).
Short press the main button to measure the first dimension (e.g., length).
Short press the main button again to measure the second dimension (e.g., width).
Short press the main button a third time to measure the third dimension (e.g., height).
Laite laskee ja näyttää äänenvoimakkuuden automaattisesti.

Illustration of volume measurement using the WANLUTECH LT-40 laser measure, showing three measurements (length, width, height) used to calculate a shaded volume.

Figure 8: Volume Measurement

4.5 Pythagoraan mittaus

Uses the Pythagorean theorem to calculate indirect distances.

Diagram illustrating the Primary Pythagorean mode on the WANLUTECH LT-40 laser measure, showing how two measurements (hypotenuse and one leg) are used to calculate the other leg of a right triangle. Also shows Secondary Pythagorean modes for data addition and subtraction.

Figure 9: Pythagorean Measurement Modes

4.5.1 Primary Pythagorean Mode (Indirect Height)

Calculates the height of an object (side 'a') by measuring the hypotenuse ('c') and the base ('b').

Select the Primary Pythagorean mode (icon: right triangle with 'a' unknown).
Short press the main button to measure the hypotenuse (data 'c').
Short press the main button again to measure the base (data 'b').
The device will automatically calculate and display the height (data 'a').

4.5.2 Secondary Pythagorean Mode (Data Addition)

Calculates a total height (a1+a2) by measuring two hypotenuses and two bases.

Select the Secondary Pythagorean mode (data addition) (icon: two right triangles stacked).
Short press the main button to measure the first hypotenuse (data 'c').
Short press the main button again to measure the first base (data 'b').
Short press the main button a third time to measure the second hypotenuse (data 'e').
The device will automatically calculate and display the total height (a1+a2).

4.5.3 Secondary Pythagorean Mode (Data Subtraction)

Calculates a height difference (a) by measuring two hypotenuses and two bases.

Select the Secondary Pythagorean mode (data subtraction) (icon: two right triangles overlapping).
Short press the main button to measure the first hypotenuse (data 'e').
Short press the main button again to measure the first base (data 'c').
Short press the main button a third time to measure the second base (data 'b').
The device will automatically calculate and display the height difference (data 'a').

5. Huolto

5.1 Puhdistus

Pyyhi laite pehmeällä, damp kangas. Älä käytä hankaavia puhdistusaineita tai liuottimia.
Keep the laser lens clean and free of dust or debris to ensure accurate measurements. Use a soft, lint-free cloth for the lens.

5.2 Varastointi

Säilytä laitetta viileässä, kuivassa paikassa, poissa suorasta auringonvalosta ja äärimmäisistä lämpötiloista.
Jos säilytät akkua pitkään, varmista, että se on osittain ladattu (noin 50 %) akun käyttöiän pidentämiseksi.

6. Vianmääritys

If you encounter issues with your LT-40, please refer to the following common problems and solutions:

Ongelma	Mahdollinen syy	Ratkaisu
Laite ei käynnisty	Akku vähissä tai latausta ei ole	Lataa laite USB-kaapelilla.
Epätarkkoja mittauksia	Laser lens is dirty; Unstable measurement surface; Incorrect reference point selected; Strong light interference.	Clean the laser lens; Ensure a stable surface; Verify the front/rear reference setting; Measure in a shaded area or use a target plate in bright conditions.
Näyttö on himmeä tai lukukelvoton	Backlight is off; Low battery.	Short press the Power Off / Backlit button to turn on the backlight; Charge the device.
Laite jumiutuu tai lakkaa reagoimasta	Väliaikainen ohjelmistohäiriö.	Long press the Power Off / Backlit button to force a shutdown, then restart the device.

7. Tekniset tiedot

Ominaisuus	Erittely
Malli	LT-40
Mittausalue	Jopa 40 metriä (131 jalkaa)
Yksiköt	m / in / ft
Laser luokka	Class II, Output power <1mW
Akun tyyppi	Lithium-Ion (rechargeable via Micro-USB)
Materiaali	Alumiiniseos ja ABS
Väri	Harmaa
Tuotteen mitat	5.6 x 1.2 x 2.1 cm
Tuotteen paino	28 g
Vedenkestävyystaso	Vesitiivis (IP54-luokitus)

8. Takuu ja tuki

WANLUTECH is dedicated to providing high-quality products and excellent customer service. For any questions, technical support, or warranty inquiries regarding your LT-40 Mini Laser Distance Meter, please contact our customer support team through the retailer where you purchased the product or visit the official WANLUTECH websivustolta yhteystiedot.

Säilytä ostokuitti takuuvaatimuksia varten.

WANLUTECH LT-40

WANLUTECH LT-40 Mini Laser Distance Meter User Manual