1. Uvod
The NOYAFA NF-824 is a versatile and essential tool designed for electrical professionals, home maintenance workers, and DIY enthusiasts. It accurately identifies circuit breakers on energized 90-230V AC electrical systems, performs GFCI outlet tests, and detects non-contact voltage (NCV). Featuring an HD LCD screen with signal strength display and adjustable sensitivity, this device simplifies electrical troubleshooting and enhances safety.
This manual provides detailed instructions for the safe and effective use of your NF-824 Circuit Breaker Finder and GFCI Outlet Tester.
2. Sigurnosne informacije
Always prioritize safety when working with electrical systems. Failure to follow these safety guidelines may result in electric shock, fire, or personal injury.
- Pročitajte i razumite sva uputstva prije korištenja uređaja.
- Ne koristite uređaj ako izgleda oštećeno ili ako ne funkcioniše ispravno.
- Ensure the electrical system is within the specified voltage range (90-230V AC) before testing.
- Always wear appropriate personal protective equipment (PPE), such as safety glasses and insulated gloves, when working with electricity.
- Ne pokušavajte otvarati ili modificirati uređaj. Za sve servisne radove obratite se kvalificiranom osoblju.
- Držite uređaj dalje od vode i vlage.
- Use caution when testing live circuits. Avoid touching exposed wires or terminals.
- NCV funkcija je samo za indikaciju; uvijek provjerite volumentage with a contact voltagtester prije dodirivanja žica.
- Do not rely solely on this device for critical safety decisions. Always follow local electrical codes and safety practices.
3. Sadržaj paketa
Provjerite da li se sve stavke nalaze u vašem paketu:
- 1x NF-824 Circuit Breaker Finder (Transmitter and Receiver)
- 1x 3-prong to 2-prong adapter
- 1x Light socket adapter
- 1x Alligator clip adapter
- 1x Type-C kabl za punjenje
- 1x uputstvo za upotrebu
- 1x torbica za nošenje

Figure 1: Complete accessory kit and carrying case for the NF-824.
4. Proizvod je gotovview
4.1. Transmitter (Outlet Tester)
- Test Plug: Connects to standard electrical outlets.
- Master Control Screen: LCD displej koji prikazuje voltage, wiring status, and GFCI trip time.
- Dugme za napajanje: Uključuje/isključuje predajnik.
- Dugme HOLD: Zamrzava trenutno očitavanje ekrana.
- GFCI Button: Initiates a GFCI test.
- LED indikator statusa: Red/Green light indicating wiring faults.
- Tip-C priključak za punjenje: Za punjenje interne baterije.

Figure 2: Transmitter (Outlet Tester) in use, showing correct wiring and voltage.
4.2. Receiver (Breaker Finder)
- NCV Indicator Light: Flashes when non-contact voltage je otkriven.
- Master Control Screen: LCD display showing signal strength and NCV status.
- Prekidač osjetljivosti: Adjusts the detection level (7 levels).
- Dugme za napajanje: Uključuje/isključuje prijemnik.
- LED svjetlo: Built-in flashlight for dark environments.
- Tip-C priključak za punjenje: Za punjenje interne baterije.

Figure 3: Receiver scanning a circuit breaker panel.
5. Podešavanje
5.1. Početno punjenje
Both the transmitter and receiver are equipped with built-in 3.7V lithium batteries. Before first use, fully charge both units using the provided Type-C charging cable. A full charge typically takes a few hours. The battery indicator on the LCD screen will show charging status.

Slika 4: Punjenje NF-824 jedinica putem Type-C priključka.
5.2. Attaching Adapters (If Needed)
Depending on your testing requirements, attach the appropriate adapter to the transmitter:
- 3-prong to 2-prong adapter: For testing older 2-prong outlets.
- Light socket adapter: For testing light bulb sockets.
- Alligator clip adapter: For direct connection to wires or terminals (use with extreme caution).
6. Uputstvo za upotrebu
6.1. Pronalaženje prekidača strujnog kruga
- Uključite odašiljač: Insert the NF-824 transmitter into the electrical outlet or fixture you wish to trace. Ensure it is securely connected. The transmitter's LCD will display the voltage and wiring status.
- Aktivirajte prijemnik: Press and hold the power button on the receiver for a few seconds to turn it on. The receiver will enter "SCAN" mode.
- Podesite osjetljivost: Use the sensitivity switch on the side of the receiver to set the desired detection level. Start with a lower sensitivity and increase if needed.
- Skenirajte razvodnu ploču: Slowly move the tip of the receiver along the circuit breakers in the electrical panel. Maintain a consistent speed and distance from each breaker.
- Identifikujte prekidač: The receiver will provide visual (flashing light on the tip, signal strength on LCD) and audible (beeping) indications when it detects the correct circuit breaker. The strongest and most consistent signal indicates the target breaker.
- Potvrdite: Once identified, turn off the suspected breaker and check if the power to the original outlet/fixture is cut.

Figure 5: Receiver displaying signal strength while scanning.
Video 1: Demonstration of the NOYAFA NF-824 Circuit Breaker Finder in action, showing how to identify the correct breaker in a panel.
6.2. GFCI Outlet Testing
- Uključite odašiljač: Insert the transmitter into a GFCI-protected outlet.
- Provjerite status ožičenja: Observe the LCD display for the initial wiring status (e.g., "CORRECT").
- Izvršite GFCI test: Press the "GFCI" button on the transmitter. The GFCI outlet should trip, cutting power to the outlet. The transmitter's display will show the trip time.
- Resetovanje GFCI-ja: Reset the GFCI outlet by pressing its reset button.
Note: If the GFCI does not trip, it may be faulty and should be inspected by a qualified electrician.
6.3. Non-Contact Voltage (NCV) testiranje
- Aktivirajte NCV: The receiver automatically enters NCV mode when powered on.
- Scan for Voltage: Move the tip of the receiver near electrical wires, outlets, or devices.
- Detect Voltage: Ako je AC voltage is present, the NCV indicator light on the receiver's tip will flash, and the LCD will show a signal strength bar. The intensity of the light and the number of bars indicate the strength of the detected voltage.

Figure 6: Receiver performing an NCV test on a cable.
6.4. Wiring Condition Detection
When the transmitter is plugged into an outlet, its LCD screen provides clear visual feedback on the wiring condition. The red/green indicator lights, combined with details on the large screen, can accurately diagnose 6 common wiring faults:
- Correct Wiring
- Open Ground
- Otvori Neutralno
- Otvori Hot
- Vruće/Neutralno Obrnuto
- Hot/Ground Revers

Figure 7: Transmitter displaying different wiring fault conditions.
7. Održavanje
- čišćenje: Obrišite uređaj suhom, mekom krpom. Ne koristite abrazivna sredstva za čišćenje ili rastvarače.
- Skladištenje: Uređaj čuvajte u njegovoj torbici za nošenje na hladnom i suhom mjestu kada se ne koristi.
- Održavanje baterije: Recharge the batteries regularly, even if the device is not used frequently, to maintain battery health.
- inspekcija: Periodically inspect the device and accessories for any signs of damage.
8. Otkrivanje problema
- No Power on Device: Provjerite je li uređaj potpuno napunjen. Pritisnite i držite dugme za napajanje nekoliko sekundi.
- Inaccurate Breaker Identification:
- Adjust the receiver's sensitivity.
- Ensure the transmitter is securely plugged into the circuit being traced.
- Scan the breakers slowly and consistently.
- Minimize interference from other electrical devices.
- GFCI Test Fails:
- Ensure the outlet is indeed GFCI protected.
- If the GFCI does not trip, the outlet or its wiring may be faulty. Consult a qualified electrician.
- NCV ne detektuje volumentage:
- Ensure the receiver is powered on and in NCV mode.
- Verify that the circuit is live.
- Adjust sensitivity if necessary.
9. Specifikacije
| Feature | Specifikacija |
|---|---|
| Model br. | NF-824 |
| Port za punjenje | USB Type-C (5V) |
| Automatski isključeno | 30min |
| Upozorenje o niskoj snazi | Da |
| Outlet Tester Screen | Segment Code LCD |
| Outlet Tester Plug Type | CN, US, EU |
| Outlet Tester Battery | 3.7V Litijum 390mAh |
| Outlet Tester Max Operating Current | <50mA |
| Outlet Tester Charging Current | 500mA |
| Outlet Tester Standby Current | ≤10uA |
| Receiver Product Size | 60x38.5x132.5 mm |
| Ekran prijemnika | Segment Code LCD |
| Receiver Sensitivity Adjustment | 7 nivoa |
| Receiver NCV Range | ≥ AC 90 V |
| Receiver Signal Strength Indicator | 7 Gears |
| Prijemnik LED svjetlo | Da |
| Baterija prijemnika | 3.7V Litijum 700mAh |
| Receiver Max Operating Current | <100mA |
| Receiver Charging Current | 700mA |
| Receiver Standby Current | ≤10uA |
10. Garancija i podrška
For warranty information, technical support, or service inquiries, please refer to the product packaging or contact NOYAFA customer service directly. Keep your purchase receipt as proof of purchase.





