1. Finitaview
The Noyafa NF-274L is a versatile laser distance meter designed for both indoor and outdoor measurements. This device can accurately measure distance, length, height, and spacing. It also calculates area, volume, and performs Pythagorean measurements. The NF-274L model features automatic horizontal and vertical measurement, live voice broadcast, and angle measurement. For detailed functionality, please refer to the following sections.

Figure 1: Noyafa NF-274L Laser Distance Meter and its applications.
2. Precauzioni di sicurezza
- Read all operational guides and safety regulations in this manual before operation. Improper use may cause damage to the device, affect measurement results, or lead to bodily injury.
- Do not disassemble or repair the instrument. Illegal modification or performance changes to the laser emitter are prohibited.
- Keep out of reach of children and avoid use by unauthorized personnel.
- Strictly prohibit aiming the laser at eyes or other body parts. Do not aim the laser at highly reflective surfaces.
- Due to potential electromagnetic radiation interference, do not use the meter near medical equipment or in flammable/explosive environments.
- Dispose of discarded batteries or the device according to local laws and regulations, not as household garbage.
3. Impostazione
3.1. Disimballaggio e contenuto della confezione
Upon receiving your Noyafa NF-274L Laser Distance Meter, please check the package contents against the list below:
| Articolo n. | Descrizione | Quantità |
|---|---|---|
| 1 | Borsa per il trasporto | 1 pezzi |
| 2 | Cavo USB | 1 pezzi |
| 3 | Reflector board (only for 100m) | 1 pezzi |
| 4 | Batteria al litio (integrata) | 1 pezzi |
| 5 | Manuale | 1 pezzi |
| 6 | Certificazione di qualificazione | 1 pezzi |

Figure 2: Contents of the NF-274L package.
3.2. Carica del dispositivo
The NF-274L is equipped with a built-in 700mAh lithium battery. To charge the device, connect the provided USB cable to the charging port on the device and a suitable USB power source. The battery indicator on the screen will show the charging status.

Figure 3: USB charging of the NF-274L.
4. Istruzioni per l'uso
4.1. Layout e pulsanti del dispositivo
Familiarizza con i pulsanti e le loro funzioni:

Figure 4: NF-274L Button Description.
- MEAS (Measure/Confirm): Initiates measurement or confirms selection.
- + (Add): Adds values or navigates up in menus.
- - (Subtract): Subtracts values or navigates down in menus.
- CLEAR (Power & Back): Turns the device on/off or goes back to the previous screen.
- Pulsante di commutazione della modalità: Switches between different measurement modes.
- Benchmark Button: Changes the measurement reference point (front or end of device).
- Pulsante del menu: Accede al menu principale.
4.2. Accensione/spegnimento
Premere il tasto CHIARO pulsante per accendere il dispositivo. Tenere premuto il pulsante CHIARO nuovamente il pulsante per spegnere.
4.3. Modalità di misurazione
4.3.1. Misurazione singola
Premere il tasto MISURA button to activate the laser. Press MISURA again to perform a single measurement. The result will be displayed directly on the screen.

Figure 5: Single distance measurement.
4.3.2. Misurazione continua
Premere MISURA to enter Continuous mode. The MAX/MIN results will be shown on the screen. To stop continuous testing, short press MISURA or CHIARO.
4.3.3. Misurazione dell'area
Short press the Mode Switch button to enter Area measurement mode. If you are not in the Area test menu, press MISURA to enter the function for measuring length and width for area calculation.

Figure 6: Area measurement in a room.
4.3.4. Misurazione del volume
If you are in Area function test mode, short press the Mode Switch button once to enter Volume measurement. You can also short press MISURA to test the length, width, and height for volume calculation.

Figure 7: Volume measurement in a room.
4.3.5. Pythagorean Measurement (Primary)
Under Volume measurement mode, short press the Mode Switch button to enter Pythagorean measurement. Short press MISURA to measure the hypotenuse value (A) and vertical edge value (C). The device will then calculate the other vertical side length (D).

Figure 8: Primary Pythagorean measurement.
4.3.6. Secondary Pythagorean Measurement
Under Pythagorean test, short press the Mode Switch button once to enter Secondary Pythagorean function. Press MISURA to measure the length of hypotenuse ①, vertical edge ②, and hypotenuse ③. The device will then calculate the length of another vertical side between ① and ③. Caution: This measurement should be performed in a right triangle setup.
4.3.7. Triangle Area Measurement
When in Secondary Pythagorean mode, short press the Mode Switch button once to enter Triangle Area measurement. Press MISURA to measure the area of the triangle and display the lengths of its three sides.
4.3.8. Trapezoidal Measurement
When in Triangle Area measurement mode, short press the Mode Switch button once to enter Trapezoidal measurement. Press MISURA to measure the length of the vertical side of the trapezoid (①), the horizontal side (②), and the other vertical side (③). The device will then calculate the length between ① and ③.
4.3.9. Automatic Horizontal Measurement
When in Trapezoidal measurement mode, short press the Mode Switch button once to enter Automatic Horizon Measurement. Press MISURA to measure the length of the hypotenuse, calculate the hypotenuse and level number of angles (α), vertical length, and horizontal length of the edge degree.
4.3.10. Automatic Vertical Measurement
When in Automatic Horizon measurement mode, short press the Mode Switch button once to enter Automatic Vertical Measurement. Press MISURA to measure the first hypotenuse of the vertical plane (Length A) and the length of the second hypotenuse (B). The angle (α) between two hypotenuses, the length point-b, and point c (Length -H) are measured.
4.3.11. Point-to-Point Measurement
When in Automatic Vertical measurement mode, short press the Mode Switch button once to enter Point-to-Point Measurement. Press MISURA to get values for point 1 and point 2, then the device will calculate the length of the other side.
Nota: Point-to-point measurement requires a central point rotation to measure two points respectively. Due to potential errors from two measuring distances and angle errors during rotation, the measurement results may have a larger error. This function is suitable for approximating distances between two points and is recommended for use with a tripod.
4.3.12. Countdown Measurement
When in Point-to-Point measurement mode, short press the Mode Switch button once to enter Countdown Measurement. Use the + / - buttons to adjust the countdown time. Press MISURA to start the measurement. Once the countdown is complete, the device will automatically perform the length function.
4.3.13. Add/Subtraction
This function is available only in Single measurement, Area measurement, and Volume measurement modes. After obtaining a test result, short press the + / - button to enter add/subtraction measurement. Press MISURA again to calculate another test result. The two test values will be automatically added or subtracted.
4.4. Benchmark Switch
Press the Benchmark button to switch the measurement reference point (front or end of the device).
4.5. Navigazione nel menu
Press the Menu button to enter the Main menu. The system icons are as follows:
- Livella digitale
- Records Review
- Interruttore audio
- Bluetooth
- Impostazione dell'unità
- Distance Offset Setting
- Informazioni sul dispositivo
4.6. Caratteristiche speciali
4.6.1. Bluetooth Transmission
The NF-274L supports Bluetooth transmission for one-click image output from a mobile app. This allows for photo annotation, form making, and exporting drawings. (Note: Bluetooth function does not support iPhone).

Figure 9: Bluetooth transmission to a mobile app.
4.6.2. Live Voice Broadcast
The device provides guidance and data broadcast for easy recording of measurements.

Figure 10: Live voice broadcast feature.
4.6.3. Archiviazione dei dati
The NF-274L can store up to 100 sets of data, allowing for convenient record-keeping and checking of past measurements.

Figure 11: Data storage capability.
4.6.4. Green Laser Beam
The NF-274L utilizes a green laser beam (500-535nm) which is often clearer and more visible, especially in outdoor or bright conditions, compared to red lasers (635nm). It features a large optical system for enhanced reflected light reception.

Figure 12: Green laser for universal indoor and outdoor ranging.

Figure 13: Comparison of green and red laser wavelengths.
4.6.5. Millimeter Accuracy
The device offers high precision with an accuracy of ±1.5 mm, achieved through a large optical lens and filtering algorithm for enhanced reflected light reception.

Figure 14: Millimeter accuracy and optical system.
4.6.6. HD Color Screen
The NF-274L features a 2.0-inch HD color display with a large number design for clearer and easier reading of measurements and settings.

Figure 15: 2.0 inch HD display.
4.6.7. Electronic Universal Horizontal Bubble
The built-in electronic angle sensor provides real-time display of the measuring angle, functioning as a universal horizontal bubble for precise leveling.

Figure 16: Electronic universal horizontal bubble and angle sensor.
4.7. Dimostrazione video
Watch this video for a visual guide on the various functions and features of the Noyafa NF-274L Laser Distance Meter:
Video 1: Demonstration of NF-274L features including voice broadcast, charging, display, Bluetooth, various measurement modes (volume, Pythagorean, level, vertical, point-to-point, trapezoidal, triangle area).
5. Manutenzione
- Mantenere il dispositivo pulito e asciutto. Utilizzare un morbido, damp panno per la pulizia. Non utilizzare detergenti o solventi abrasivi.
- Store the device in its carry bag when not in use to protect it from dust and physical damage.
- Evitare di esporre il dispositivo a temperature estreme o alla luce solare diretta per periodi prolungati.
- Ensure the battery is charged regularly, especially if the device is not used for an extended time, to maintain battery health.
- Non tentare di aprire il dispositivo casing, as this will void the warranty and may cause damage.
6. Risoluzione Dei Problemi
If you encounter any issues with your NF-274L, refer to the table below for common problems and solutions:
| Codice | Motivo | Soluzione |
|---|---|---|
| 203 | Alta o bassa temperatura | Measure at the required temperature range (0°C to 40°C) |
| 220 | Batteria scarica | Sostituire o ricaricare la batteria |
| 254 | Calcolo sbagliato | Misurare di nuovo in modo corretto |
| 255 | Segnale debole | Testare una forte capacità di riflessione del bersaglio |
| 256 | Segnale forte | Don't measure under strong light |
| 257 | Fuori misura | Misura all'interno dell'intervallo |
| 300 | Errore hardware | Riavvia o contatta il rivenditore se si verifica di nuovo |
7. Specifiche
| Parametro | Value (NF-274L) |
|---|---|
| Allineare | 60m/80m/100m |
| Precisione | +/- 1.5 mm |
| Schermo LCD | FSNT con retroilluminazione |
| Lunghezza d'onda e uscita | 500~535nm, <1mW |
| Temperatura di lavoro | 0~40°C (32F~104F) |
| Temperatura di conservazione | -10~60°C (14F~140F) |
| Laser spento | Anni 30 |
| Auto-off | 2 minuti |
| Livello di protezione | Grado di protezione IP54 |
| Energia | Batteria al litio da 700 mAh |
| Trasmissione vocale | √ |
| Misurazione dei gradi | √ |
| Misurazione del livello | √ |
| Cambio di unità | m/piedi/pollici/piedi+pollici |
| Cambio di benchmark | √ |
| Misurazione singola | √ |
| Misurazione continua | √ |
| Misurazione dell'area | √ |
| Misurazione del volume | √ |
| Misurazione pitagorica | √ |
| Misurazione verticale | √ |
| Misurazione addizione e sottrazione | √ |
| Archiviazione dei dati | 100 set |
| Misurare | 119*50*26mm |
| Peso | 110g |

Figure 17: NF-274L Product Dimensions.
8. Suggerimenti per l'utente
- For best accuracy, especially in bright conditions or over long distances, use the included reflector board.
- When performing Pythagorean or point-to-point measurements, ensure the device is stable. Using a tripod is highly recommended to minimize errors.
- Keep the laser lens clean. Dust or smudges can affect measurement accuracy.
- Controllare regolarmente il livello della batteria per evitare interruzioni durante le misurazioni critiche.
- If using the Bluetooth function, ensure your mobile device's Bluetooth is enabled and the appropriate app is installed (available for Android, not iPhone).
9. Garanzia e supporto
For any quality issues or questions regarding your Noyafa NF-274L Laser Distance Meter, please contact your local distributor or the manufacturer directly. They are ready to offer solutions.
È possibile scaricare il manuale utente ufficiale in formato PDF: View Manuale utente (PDF)
















