1. Product voorbijview
The MILESEEY D5-APP-US is a high-precision laser distance meter designed for various measurement tasks. It features smart app connectivity, an electronic angle sensor, and multiple measurement modes for efficiency and accuracy.

Figure 1: MILESEEY D5-APP-US Laser Measuring Tool and included accessories. The package contains the laser measure, a portable bag, a portable bracelet, a user manual, and 2 x 1.5V AAA batteries.
2. Instellen
2.1 Batterij installatie
The device requires 2 x 1.5V AAA alkaline batteries. Ensure correct polarity when inserting the batteries into the compartment located on the back of the device.
2.2 In-/uitschakelen
Om het apparaat in te schakelen, drukt u op de MEETWAARDEN button. The laser will stand by for measurement. To power off, long-press the UIT/WISSEN button. The device will automatically shut off after 180 seconds of inactivity to conserve power.
2.3 Eenheidsschakeling
To switch measurement units (M/FT/IN), long-press the EENHEID button. The device supports various units including meters, feet, inches, and fractional inches. For area and volume measurements, only m² / m³ and ft² / ft³ are available.

Figure 2: Instructions for changing measurement units and setting reference points. Long-press the UNIT button to cycle through units (m, ft, in, ft+in). Short-press the UNIT button to change the reference point between front and back.
2.4 Instelling van het referentiepunt
The default reference point is the end of the device. To change the reference point (front or back), short-press the EENHEID button. This is crucial for accurate measurements depending on where the device is placed.
2.5 Buzzer On/Off
To turn the buzzer sound on or off, long-press the sound button. A speaker icon with a cross will appear on the display when the buzzer is off.
2.6 Slimme app-connectiviteit
The MILESEEY D5-APP-US syncs with the "Smart Life" app for real-time data transfer and storage of up to 1000 sets. The app allows you to create 2D floor plans or annotate images with measurements.

Figure 3: The laser measuring tool connected to the Smart Life app, showing real-time data transfer and storage capabilities.

Figure 4: The Smart Life app allows users to draw on pictures or create hand-drawn floor plans with integrated measurements.
Video 1: This video demonstrates how the Huepar (similar brand) app works with a laser measuring tool, showcasing features like real-time data transfer and floor plan creation. This functionality is comparable to the MILESEEY D5-APP-US with the Smart Life app.
3. Bedrijfsmodi:
3.1 Enkele meting
Druk op de MEETWAARDEN Druk één keer op de knop om de laser te activeren. Druk er nogmaals op om een enkele afstandsmeting uit te voeren. Het resultaat wordt op het scherm weergegeven.
3.2 Continue meting
Houd de MEETWAARDEN button for 2-3 seconds to enter continuous measurement mode. The device will continuously measure and display the maximum, minimum, and current values. Short-press MEETWAARDEN again to stop and display the final data.
3.3 Oppervlaktemeting
Druk op de MODUS button until the area icon appears. Take two consecutive measurements (length and width). The device will automatically calculate and display the area.
3.4 Volumemeting
Druk op de MODUS Houd de knop ingedrukt totdat het volume-icoon verschijnt. Neem drie opeenvolgende metingen (lengte, breedte en hoogte). Het apparaat berekent en toont automatisch het volume.
3.5 Pythagorean Measurement (Indirect Length)
The device supports 2-point and 3-point Pythagorean measurements for indirect length calculations. Press the MODUS button until the desired Pythagorean icon appears. Follow the on-screen prompts to take the required measurements. For best accuracy, especially with handheld measurements, using a tripod is recommended.
Video 2: This video provides a detailed guide on various measurement methods for a laser measuring tool, including single, continuous, area, volume, and Pythagorean measurements. This is directly applicable to the MILESEEY D5-APP-US.
3.6 Optellen en aftrekken
To add or subtract measurements, take the first measurement, then press the + or - button. Take the next measurement, and the result of the operation will be displayed. This function can be used for length, area, and volume calculations.
3.7 Electronic Angle Sensor
The device features an advanced electronic angle sensor that provides real-time angle display. This allows for faster and more accurate measurements compared to traditional bubble levels, especially for indirect height and distance calculations.

Figure 5: The electronic angle sensor provides real-time angle display, enhancing accuracy for various measurements.
4. Onderhoud
4.1 Accuracy Check
To check the accuracy of the measuring tool, select a permanently unchangeable indoor measuring section (approx. 9.8 to 32 ft or 3 to 10 m long) with weak backlighting and a smooth, reflective target area (e.g., a white-painted wall). Measure the distance 10 times in succession. The deviation of individual measurements from the average value must not exceed ±0.12 in (±2 mm). Record these measurements to compare accuracy at a later date.
4.2 Algemeen onderhoud
Keep the device clean and dry. Avoid exposing it to extreme temperatures or direct sunlight for extended periods. The device has an IP54 rating, indicating protection against dust and splashing water, but it is not fully waterproof.

Figure 6: The device features an IP54 rating for dust and splash resistance.
5. Probleemoplossing
The device displays error codes for various issues. Refer to the table below for common error codes and their corrective measures.
| Foutcode | Oorzaak | Correctieve maatregel |
|---|---|---|
| Fout10 | Batterij te laag | Change batteries or charge the device |
| Fout15 | Buiten bereik | Meet doel binnen het bereik |
| Fout16 | Received signal too weak and measuring time too long | Use high reflectivity reflector |
| Fout18 | Achtergrondhelderheid te hoog | Use low reflectivity reflector |
| Fout26 | Out of the device's digital display range | Switch units or measure within the digital display range |
6. Specificaties
| Functie | Specificatie |
|---|---|
| Meetbereik | Tot 229 ft |
| Nauwkeurigheid | ±2mm |
| Meetsnelheid | 0.5 seconden |
| Hoeksensor | Electronic, real-time display |
| Eenheden | Meters (M), Feet (FT), Inches (IN) |
| Weergave | 2" Large Easy Read Backlit LCD |
| App-connectiviteit | Smart Life app (data transfer, floor plans, image annotation) |
| Gegevensopslag | Up to 1000 sets (via app), 30 sets (on device) |
| Automatische uitschakeling | 180 seconden inactiviteit |
| Batterijtype | 2 x 1.5V AAA Alkaline batteries |
| Materiaal | Acrylonitrilbutadieenstyreen |
| Afmetingen | 2.49x11x4.55cm |
| Gewicht | 200 gram |
| Waterbestendigheid | Not Water Resistant (IP54 dust and splash resistant) |
7. Garantie en ondersteuning
The MILESEEY D5-APP-US Laser Measuring Tool comes with a 2-year warranty. For technical support or warranty claims, please refer to the contact information provided in the product packaging or on the official MILESEEY webplaats.