1. Úvod
The MiLESEEY DT11/DT20 is an innovative measuring tool that combines the functionality of a laser rangefinder with a traditional tape measure. The DT11 model offers 2-in-1 functionality (laser and tape measure), while the DT20 provides enhanced 3-in-1 capabilities, including a digital display for tape measurements and Bluetooth connectivity. This manual provides essential information for safe operation, setup, and maintenance of your device, ensuring accurate and efficient measurements for various applications.

Figure 1: MiLESEEY DT11/DT20 Laser Tape Measure
2. Bezpečnostní informace
WARNING: Class 2 Laser Product
- Nedívejte se přímo do laserového paprsku.
- Nemiřte laserovým paprskem na lidi nebo zvířata.
- Zabraňte přímému vystavení očí laserovému paprsku.
- Udržujte zařízení mimo dosah dětí.
- Používejte zařízení pouze tak, jak je popsáno v tomto návodu.
- Do not attempt to modify or disassemble the device. Unauthorized modifications can lead to hazardous laser radiation exposure.
Always ensure a stable footing when taking measurements, especially in elevated positions. Protect the device from extreme temperatures, moisture, and strong impacts to maintain its functionality and safety features.
3. Konec produktuview
3.1 Komponenty
The device features a robust design with a durable nylon-coated tape and an ABS plastic case with PRT rubber wrap for enhanced grip and protection.

Figure 2: Key features of the DT11/DT20 device, highlighting 2-in-1 functionality and accuracy.
- Laserový vysílač/přijímač: For precise laser distance measurements.
- Svinovací metr: A 5-meter (16-foot) nylon-coated physical tape.
- Obrazovka digitálního displeje: Shows measurement readings, battery status, and unit information.
- tlačítka:
- Tlačítko nabídky: Used for switching measurement modes and viewhistorická data.
- Tlačítko Měření: Activates the laser and initiates measurements, including continuous measurement.
- Tlačítko jednotky: Toggles between measurement units (m/in/ft/ft+in) and adjusts the measurement basis (front/rear of device).
- USB nabíjecí port: For convenient recharging of the internal lithium battery.
- Magnetický háček: Located at the end of the tape for secure attachment to metal surfaces, improving stability and accuracy.
- Tape Lock Mechanism: A gate switch that locks the tape in place, preventing accidental retraction and rebound.
3.2 Digital Display Icons

Figure 3: LED Digital Display Screen showing various icons and unit conversion options.
- Measurement Value Display: Zobrazuje aktuální naměřenou hodnotu.
- Indikace jednotky: Displays the currently selected unit (e.g., m for meters, in for inches, ft for feet).
- Indikace baterie: Zobrazuje aktuální úroveň nabití baterie.
- Laser Indication: Illuminates when the laser is active.
- Referenční bod: Indicates whether the measurement is taken from the front or rear edge of the device.
4. Nastavení
4.1 Nabíjení zařízení
The device is powered by a high-quality, rechargeable lithium battery. For optimal performance and longevity, fully charge the device before its first use.
- Vyhledejte nabíjecí port USB na boku zařízení.
- Connect the provided USB cable to the device and a suitable USB power source (e.g., computer, wall adapter).
- The battery indicator on the digital display will show the charging status.
- A full charge typically provides approximately 5 hours of continuous use.

Figure 4: Device connected for USB charging.
4.2 Zapnutí/vypnutí
- Zapnutí: Press the "Measure" button once.
- Vypnutí: Press and hold the "Menu" button for a few seconds until the display turns off. The device also features automatic power-off to conserve energy: the laser will auto-off after 30 seconds of inactivity, and the LCD will auto-off after 180 seconds of inactivity.
5. Návod k obsluze
5.1 Laser Measurement (DT11 & DT20)
The integrated laser rangefinder can measure distances up to 40 meters with a high accuracy of ±2mm.
- Ujistěte se, že je zařízení zapnuté.
- Press the "Measure" button once to activate the laser. A red laser dot will appear from the device.
- Aim the laser dot precisely at your target point.
- Press the "Measure" button again to take a single measurement. The measured distance will be displayed on the screen.
- For continuous measurement, press and hold the "Measure" button. The display will update in real-time as you move the device, allowing you to find minimum or maximum distances.

Figure 5: Demonstrating laser ranging functionality.
5.2 Tape Measurement (DT11 & DT20)
The physical tape measure extends up to 5 meters (16 feet) and features a durable nylon coating for wear resistance.
- Gently pull out the tape measure to the desired length.
- The tape features a gate switch mechanism. Pressing this switch locks the tape securely in place, preventing accidental retraction and ensuring user safety by avoiding rebound.
- To retract the tape, release the gate switch, and the tape will smoothly retract into the device.

Figure 6: The ruler locks the tape without rebound feature.
5.3 Digital Display Measurement Mode (DT20 Only)
For the DT20 model, when the physical tape measure is pulled out, the measurement result is automatically and clearly displayed on the screen, providing an easy-to-read digital readout.

Figure 7: Digital display showing tape measurement in real-time (DT20).
5.4 Převod jednotek
To change the measurement unit (meters, inches, feet, feet+inches), long press the "Unit" button. The display will cycle through the available units as illustrated in Figure 3 in the Product Overview sekce.
5.5 Bluetooth Connectivity (DT20 Only)
The DT20 model includes a built-in Bluetooth module for seamless data transmission to a compatible mobile application, enhancing workflow efficiency.
- Ujistěte se, že je na vašem smartphonu nebo tabletu povoleno rozhraní Bluetooth.
- Open the MiLESEEY companion app (refer to product packaging or the official manufacturer website for app details and download instructions).
- Follow the app's instructions to pair with your DT20 device.
- Once connected, measurement data can be transmitted to the app for recording, analysis, or integration into digital floor plans and project documentation.

Figure 8: DT20 Bluetooth version for data transmission to an app.

Figure 9: Using the DT20 with a tablet for floor plan creation.
6. Údržba
- Čištění: Otřete zařízení měkkým, mírně damp hadříkem. Nepoužívejte abrazivní čisticí prostředky, rozpouštědla ani neponořujte zařízení do vody.
- Skladování: Zařízení skladujte na chladném a suchém místě, mimo dosah přímého slunečního záření, extrémních teplot a vysoké vlhkosti.
- Péče o baterie: For optimal battery life, avoid fully discharging the battery frequently. Recharge the device when the battery indicator shows a low charge. If storing for extended periods, charge the battery to approximately 50% every few months.
- Ochrana: The device has an IP54 rating, indicating it is protected against dust ingress and splashing water from any direction. While robust, avoid prolonged exposure to water or excessively dusty environments to ensure long-term reliability.

Figure 10: Device demonstrating IP54 waterproof and dustproof protection.
7. Řešení problémů
| Problém | Možná příčina / řešení |
|---|---|
| Laser measurement inaccurate. | Ensure the laser is aimed correctly at a flat, non-reflective surface. Check the reference point setting (front or rear of device) using the Unit button. |
| Digital display not showing tape measurement (DT20). | Ensure the tape is fully extended and the device is in the correct digital display measurement mode. The digital display is specifically for the tape measurement in the DT20 model, not the DT11. |
| Zařízení se nezapíná. | Check the battery level and recharge if necessary. Ensure the power button is pressed firmly. |
| Bluetooth connection issues (DT20). | Ensure Bluetooth is enabled on both the DT20 device and your smartphone/tablet. Verify the companion app is running and try restarting both devices. |
8. Specifikace
| Funkce | Specifikace |
|---|---|
| Název značky | MiLESEEY |
| Číslo modelu | DT11 / DT20 |
| Přesnost měření | ±2 mm |
| Typ napájení | Rechargeable (Lithium Battery) |
| Rozsah laserového měření | 40 m |
| Délka metru | 5 m (16 stop) |
| Certifikace | CE, FCC, RoHS |
| Hodnocení ochrany | IP54 (vodotěsný a prachotěsný) |
| Výdrž baterie při nepřetržitém používání | Přibl. 5 hodin |
9. Uživatelské tipy
- For Precise Tape Readings (DT20): While the device itself is robust, the digital display on the DT20 provides a clear and precise reading of the tape measurement, which can be more accurate than reading the physical tape directly, especially in low light or awkward angles.
- Area Calculation: The device supports area calculation. Refer to the on-screen menu options (accessed via the Menu button) for specific instructions on how to use this feature for quick area measurements.
- Bluetooth for Project Management (DT20): Leverage the Bluetooth feature on the DT20 to connect to a compatible app. This allows for easy recording of measurements, creating digital floor plans, and streamlining project data management, making your work more efficient.
10. Záruka a podpora
For detailed warranty information, technical support, or service inquiries regarding your MiLESEEY DT11/DT20 Laser Tape Measure, please refer to the contact information provided with your purchase documentation or visit the official MiLESEEY webVždy si uschovejte doklad o koupi pro případné reklamace.
11. Video s ukázkou produktu
Video 1: Official product demonstration of the MiLESEEY Laser Tape Measure, showcasinjeho vlastnosti a použití.





