1. Introducció
Thank you for choosing the HOTO Smart Laser Measure Pro H-D50. This device is a high-precision digital laser measuring tool designed for various applications, offering advanced features like multiple measurement modes, Bluetooth connectivity to the HOTO App, and a clear LED display. This manual provides essential information for the safe and efficient use of your device. Please read it thoroughly before operation and keep it for future reference.

Figure 1: HOTO Smart Laser Measure Pro H-D50
2. Producte acabatview
The HOTO Smart Laser Measure Pro H-D50 is a versatile and portable measuring device. It features a sleek design, intuitive one-button operation, and robust functionality through its companion mobile application. Key features include:
- 5 Measurement Modes: Length, Angle, Angular Height, Area, and Virtual Ruler.
- Alta precisió: Measures with an accuracy of ±2mm.
- Ampli rang de mesura: From 0.05m up to 50m.
- Connectivitat Bluetooth: Connects to the HOTO App for remote control, data management, blueprint drawing, and photo annotation.
- Esborra la pantalla: 1.8-inch HD LED display for easy reading of measurements.
- Bateria de llarga durada: 850mAh ultra-high capacity lithium battery, rechargeable via Type-C port.
- Disseny durador: Produced in wear-resistant ABS+PC with an aluminum alloy cord hole.

Figure 2: HOTO Laser Measure Pro Key Features
3. Especificacions
| Atribut | Valor |
|---|---|
| Nom de marca | FET |
| Número de model | H-D50 |
| Interval de mesura | 0.05 m - 50 m |
| Precisió de la mesura | ± 2 mm |
| Nivell de perill làser | Classe 1 (<1 mW) |
| Tipus de potència | Rechargeable (850mAh Lithium Battery) |
| Bateria inclosa | Sí |
| Pantalla de visualització | 1.8-inch HD LED Display |
| Interval Bluetooth | Aprox. 8m |
| Certificació | CE |
| Voltage | 5V⎓1A |
| Potència de funcionament | 1 W (màx.) |
| Temps de càrrega | Aprox. 100min |
| Apagat automàtic | 180 s |
| Apagat automàtic del làser | 180 s |
| Temperatura de treball | -10 °C ~ 50 °C |
| Temperatura d'emmagatzematge | -20 °C ~ 60 °C |
| Humitat d'emmagatzematge | 20% ~ 80% HR |
| Dimensions | 99.5 × 44.1 × 23.3mm (Approx. 14 x 9.5 x 3 cm package) |
| Pes net | Aprox. 90 g |
Note: Shortest length is measured with the front-end benchmark. 'm' represents 'distance' in major surface reflection standards. All presented data may suffer slight variations due to changes in environmental conditions. Real parameters obtained by users will be considered with priority. The laser measure is designed for indoor use. Measurements may vary greatly when there is strong sunlight, extreme temperatures, conditions that weaken the reflection, or battery insufficiency.

Figure 3: Detailed Product Specifications and Dimensions
4. Configuració
4.1 Càrrega del dispositiu
The HOTO Smart Laser Measure Pro is equipped with an 850mAh rechargeable lithium battery. Before first use, or when the battery indicator is low, charge the device using a Type-C charging cable (not included) connected to a compatible power source. A full charge takes approximately 100 minutes.

Figure 4: Device Charging
4.2 Connecting to the HOTO App
For enhanced functionality, connect your device to the HOTO App via Bluetooth. The app allows for remote control, unit conversion, and advanced measurement features.
- Download the HOTO App: Scan the QR code provided in the product packaging or search for "HOTO app" in your mobile device's app store.
- Install and open the HOTO App.
- Assegureu-vos que el Bluetooth estigui habilitat al vostre dispositiu mòbil.
- Power on the HOTO Smart Laser Measure Pro.
- Within the HOTO App, navigate to the device connection page. The app should detect your laser measure.
- Segueix les instruccions que apareixen a la pantalla de l'aplicació per completar el procés d'emparellament.

Figure 5: Connecting to the HOTO App
5. Instruccions de funcionament
5.1 Funcionament bàsic
The device features an intuitive one-button design for ease of use.
- Encès/apagat: Press and hold the main button to power the device on or off.
- Mesura única: Short press the main button to initiate a measurement.
- Switching Benchmarks: Double-click the main button to switch the measurement benchmark between the front and end of the device.
- Selecció del mode: Use the side button to cycle through the 5 pre-installed measurement modes.

Figure 6: Intuitive One-Button Operations
5.2 Modes de mesura
The HOTO Smart Laser Measure Pro offers five distinct measurement modes:
- Mesura de longitud: Mesura la distància lineal entre dos punts.
- Mesura de l'angle: Measures angles by placing the device against surfaces.
- Angular Height Measurement: Calculates height using angle and distance measurements.
- Mesura de l'àrea: Calculates the area of a surface by taking two perpendicular length measurements.
- Virtual Ruler: Provides a visual guide for alignment and short-distance measurements.

Figure 7: Length and Angle Measurement Examples

Figure 8: Angular Height, Area, and Virtual Ruler Measurement Examples
5.3 Using with the HOTO App
The HOTO App unlocks advanced functionalities for your laser measure:
- Remote Measurement Control: Initiate measurements directly from your phone.
- Conversió d'unitat: Easily switch between measurement units (meters, feet, feet in inches 1/16) within the app's product settings.
- Emmagatzematge de dades: The device has memory capacity for 4 measurements, and the app can store more extensive measurement history.
- Blueprint Drawing: Draw floor plans and automatically calculate lengths on the layout.
- Photo Annotation: Capture or import images and annotate measurement data directly on the photos.

Figure 9: App Interface for Remote Control and Data Display

Figure 10: App Features: Blueprint Drawing and Photo Annotation
5.4 Videotutorial
For a visual guide on how to use the HOTO Smart Laser Measure Pro, please watch the official tutorial video:
Video 1: HOTO Laser Measure Pro Demonstration
6. Manteniment
- Neteja: Utilitzeu un suau, damp drap per netejar el dispositiu. No utilitzeu productes de neteja abrasius ni dissolvents.
- Emmagatzematge: Guardeu el dispositiu en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Cura de la bateria: Recarrega la bateria regularment, fins i tot si el dispositiu no s'utilitza amb freqüència, per mantenir-ne l'estat.
- Protecció: Eviteu deixar caure el dispositiu o sotmetre-lo a forts impactes.
7. Solució De Problemes
- El dispositiu no s'encén: Assegura't que la bateria estigui carregada. Connecta'l a un carregador de tipus C i torna-ho a provar.
- Mesures inexactes: Ensure the laser path is clear and the target surface is reflective. Avoid strong sunlight. Check the selected benchmark (front or end of device).
- Problemes de connectivitat de l'aplicació: Ensure Bluetooth is enabled on your phone and the device is within range (approx. 8m). Restart both the device and the app.
- Benchmark setting not saving (from Q&A): If the device does not retain your preferred benchmark setting after being turned off and on, try resetting the device (if a reset option is available in the app or device settings) or re-pairing it with the app. Ensure the app is updated to the latest version.
- Pantalla no clara: Check for dirt or smudges on the display. Ensure the device is not exposed to extreme temperatures.
8. Consells d'usuari
- Unit Consistency: Remember to set your preferred measurement units (meters, feet, or feet in inches) in the HOTO App settings, as this is where the conversion is managed.
- Area Calculation: The device can calculate area. For accurate results, ensure your two length measurements are perpendicular to each other.
- App for Advanced Features: Leverage the HOTO App for remote control, blueprint drawing, and annotating photos with measurements for project planning.
9. Garantia i Suport
For warranty information, technical support, or service inquiries, please refer to the product packaging or contact the HOTO Official Store directly. Keep your purchase receipt as proof of purchase.





