Introduction
The NOYAFA NF-826 is a portable instrument designed for effortlessly locating buried cables and pipelines. Utilizing advanced digital circuit technology, it ensures stable and reliable electrical performance. This device is ideal for diagnosing fault locations without extensive digging, saving time and preventing damage to walls or ground. It can detect electrical circuits, water and gas pipes, and cables buried in walls and underground with precision, including open and short circuit faults.
Safety Information
- Always read and understand this manual before operating the device.
- Do not attempt to locate live wires without proper training and safety precautions. High voltage can be dangerous.
- Ensure proper grounding when connecting the transmitter to avoid electrical hazards.
- Keep the device away from water and extreme temperatures.
- Do not disassemble or modify the device. Refer all servicing to qualified personnel.
- Use only the specified battery type and charging method.
What's in the Box
- NF-826 Transmitter Unit
- NF-826 Receiver Unit
- Test Leads (Red and Black)
- Ground Rod
- USB Charging Cable
- User Manual (this document)

Image: Contents of the NOYAFA NF-826 package, including the transmitter, receiver, test leads, ground rod, USB cable, and user manual.
Specifications
| Feature | Transmitter | Receiver |
|---|---|---|
| Model | NF-826 | |
| Brand | NOYAFA | |
| Dimensions (L x W x H) | 1.77 x 1.3 x 4.72 inches (each unit) | |
| Weight | 1 Pound (total) | |
| Power Source | Battery Powered (1 Lithium Metal battery included) | Battery Powered (1 Lithium Metal battery included) |
| Battery Capacity | 1400mAh | 1400mAh |
| Battery Life | 8-10 hours | 8-10 hours |
| Voltage Measurement | 12-400V AC/DC | N/A |
| Wire Tracer Range | Up to 3-4 feet deep and 2000 feet in length | |
| Functions | Self-checking, Auto frequency sweep, Flashlight, Backlight, Auto shutdown | Mute mode, Auto frequency sweep, Flashlight, Backlight, Auto shutdown, NCV |
Setup
1. Charging the Units
Both the transmitter and receiver units feature built-in 1400mAh lithium batteries.
- Connect the provided USB charging cable to the charging port on each unit.
- Plug the other end of the USB cable into a compatible USB power adapter (not included) or a computer USB port.
- The battery indicator on the LCD screen will show charging status. Charge until full.

Image: NOYAFA NF-826 units connected to USB chargers, illustrating the 1400mAh battery and USB charging capability.
2. Connecting the Transmitter
The transmitter sends the signal through the cable or pipe you wish to locate.
- For underground cables: Connect the red test lead to the cable and the black test lead to a suitable ground point (e.g., the provided ground rod inserted into the earth).
- For in-wall or circuit tracing: Connect the test leads directly to the circuit or wire.

Image: The NF-826 transmitter connected to an underground wire and a ground rod, demonstrating the setup for wire tracing.
Operating Instructions
1. Powering On
Press the power button on both the transmitter and receiver units to turn them on. The LCD screen will illuminate.

Image: The NOYAFA NF-826 transmitter and receiver units, showing their displays and control buttons.
2. Selecting Operating Mode
The NF-826 offers different modes for various detection scenarios.
- Auto Mode: Recommended for general tracing. The device automatically adjusts sensitivity.
- Manual Mode: Allows for fine-tuning sensitivity for precise location of cables or faults.

Image: The NF-826 receiver being used to detect an underground cable, with the transmitter connected to the cable.
3. Locating Cables and Pipes
With the transmitter connected and active, use the receiver to scan the area where the cable or pipe is suspected.
- Hold the receiver with the pointed end (antenna) close to the ground or wall surface.
- Move the receiver slowly along the suspected path. The signal strength indicator on the LCD and the audible tone will increase as you get closer to the cable/pipe.
- For best results, sweep the receiver from side to side to pinpoint the exact location.
Video: Demonstration of the NOYAFA NF-826 in action, showing how to use the receiver to trace underground cables and detect short circuits.
Video: A detailed overview of the NOYAFA NF-826, showcasing its features and practical application in locating underground wires.
4. Detecting Wire Breaks and Short Circuits
The NF-826 can identify breaks and short circuits in cables.
- For breaks: Connect the transmitter to one end of the cable. Scan along the cable path. The signal will drop significantly or disappear past the break point.
- For short circuits: Connect the transmitter across the shorted wires. The receiver will indicate a strong signal at the shorted location.

Image: The NF-826 being used to find short circuits and breaks in underfloor electric heating lines, illustrating its fault detection capability.
Video: A demonstration of the NF-826's ability to locate underground cables and identify break points and short circuits.
5. AC/DC Voltage Measurement
The transmitter unit can measure AC/DC voltage from 12V to 400V.
- Connect the test leads to the voltage source.
- The voltage reading will be displayed on the transmitter's LCD screen.

Image: The NF-826 transmitter measuring AC/DC voltage, demonstrating its multimeter functionality.
6. Non-Contact Voltage (NCV) Test
The receiver unit features an NCV function for quick detection of live AC voltage without direct contact.
- Activate the NCV mode on the receiver.
- Bring the receiver close to the suspected live wire or outlet. The device will indicate the presence of voltage.

Image: The NF-826 receiver performing a Non-Contact Voltage (NCV) test on an electrical outlet, showing its ability to detect live wires.
7. Flashlight Function
Both units are equipped with a flashlight for use in low-light conditions.
- Press the flashlight button to turn the light on or off.

Image: The NF-826 units with their flashlights illuminated, useful for working in dark environments.
Maintenance
- Keep the device clean and dry. Wipe with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Store the device in its carrying case in a cool, dry place when not in use.
- Recharge the batteries regularly, even if not in frequent use, to maintain battery health.
- Inspect test leads and connectors for damage before each use. Replace if necessary.
Troubleshooting
- No Signal/Weak Signal:
- Check battery levels of both transmitter and receiver.
- Ensure proper connection of the transmitter to the cable and ground.
- Verify the transmitter is powered on and transmitting (check LCD).
- Adjust receiver sensitivity (switch to manual mode and increase level).
- Ensure the cable is not heavily shielded or too deep for the specified range.
- Inaccurate Location:
- Move the receiver slower and closer to the surface.
- Ensure there are no other strong electromagnetic interferences nearby.
- Re-check transmitter connection and grounding.
- Device Not Powering On:
- Ensure batteries are fully charged.
- Check for any physical damage to the power button or unit.
Video: A quick demonstration of the NOYAFA NF-826, highlighting its ease of use and effectiveness in cable tracing.
Warranty and Support
NOYAFA products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the official NOYAFA website or contact their customer service directly. Keep your purchase receipt as proof of purchase.
For more information, visit the official NOYAFA Store: NOYAFA Store.





