1. Introduction
The NOYAFA NF-825TMR is a versatile electric wire detector designed for professionals and DIY enthusiasts. It combines multiple functions including strong current hunting, network cable locating, circuit breaker positioning, socket testing, and non-contact voltage detection. This manual provides detailed instructions to help you safely and effectively use your device.
2. Safety Information
WARNING: Always exercise caution when working with electrical systems. Failure to follow safety guidelines can result in injury or damage to the device.
- Read and understand all instructions before operating the device.
- Do not use the device if it appears damaged or is not functioning correctly.
- Ensure proper insulation and personal protective equipment (PPE) when working with live circuits.
- The strong current hunting mode is voltage resistant and burn-proof up to 220V.
- The circuit breaker hunting mode only supports 120V.
- Keep the device away from water and extreme temperatures.
- Do not attempt to modify or repair the device yourself. Contact qualified personnel for service.
3. Package Contents
Verify that all items are present in your package:
Image: Package contents of NOYAFA NF-825TMR including Transmitter, Receiver, cables, clips, user manual, and quality certificate.
- 1 x 825T Transmitter
- 1 x 825R Receiver
- 1 x 825M Socket Tester
- 1 x Exclusive Accessory Cable
- 1 x Multimeter Adapter Cable
- 1 x C04 Alligator Clip
- 1 x Type-C Charging Cable
- 1 x 825TMR Box
- 1 x 825TMR Toolkit
- 1 x User Manual
- 1 x Quality Certificate
4. Product Overview
The NF-825TMR consists of three main units: the Transmitter (825T), Receiver (825R), and Socket Tester (825M).
Image: Diagram showing the key components and controls of the 825T Transmitter, 825R Receiver, and 825M Socket Tester.
4.1. Transmitter (825T)
- Power Button: Turns the transmitter on/off.
- Scan/Live/Off Switch: Selects operating mode (Scan for cable hunting, Live for strong current tracking, Off).
- Type-C Charging Port: For charging the internal lithium battery.
- Network Cable Tracking Port: RJ45 port for network cable tracing.
- Strong Electricity Tracking/Power Button: Used for strong current detection.
- Negative/Positive Electrode: Connection points for test leads.
- Light Indicator: Indicates power and mode status.
4.2. Receiver (825R)
- Power Button: Turns the receiver on/off.
- Signal Indicator: LED lights (1, 2, 3) indicate signal strength.
- Sensitivity Switch: Rotary dial to adjust detection sensitivity.
- SCAN Button: Initiates scanning for signals.
- Socket Button: Activates circuit breaker hunting mode.
- NCV Button: Activates non-contact voltage detection.
- Lighting Switch: Turns the built-in LED flashlight on/off.
- Probe: For detecting signals.
- Type-C Charging Port: For charging the internal lithium battery.
4.3. Socket Tester (825M)
- GFCI Button: Ground Fault Circuit Interrupter test button.
- Indicator Lights: LEDs to show wiring status (Correct, Open Ground, Open Neutral, Open Hot, Live/GRD Rev, Live/NEU Rev, Live/GRD Rev Open GRD).
- 3-pin Power Plug: For connecting to standard power outlets.
5. Setup and Charging
Before first use, ensure both the Transmitter (825T) and Receiver (825R) are fully charged.
- Charging: Connect the provided Type-C charging cable to the Type-C charging port on both the Transmitter and Receiver, and then to a suitable USB power adapter (DC 5V/1A). The charging indicator will show charging status.
Image: Type-C charging for both the Transmitter and Receiver units.
- Power On/Off: Press and hold the Power button on each unit to turn them on or off.
6. Operating Modes
6.1. Strong Current Hunting Mode (Detecting Cables In-Wall/Earth)
This mode is used to detect the direction of cables, electrical lines, or pipelines buried in walls or underground, even under live voltage (up to 220V).
- Connect the Transmitter (825T) to the target cable using the appropriate accessory cable and alligator clips. Ensure a secure connection.
- Set the Transmitter switch to 'Live' mode.
- Turn on the Receiver (825R) and adjust the sensitivity dial to an appropriate level.
- Move the Receiver's probe along the suspected path of the cable. The signal indicator LEDs and audible beeps will guide you to the cable's location and direction. A stronger signal (more LEDs lit, faster beeping) indicates closer proximity to the cable.
Image: Strong Electricity Tracking Mode, showing the receiver detecting a cable in a wall with a detection depth of 50cm and voltage range of 250V.
Video: Demonstration of the NOYAFA NF-825TMR in various applications, including detecting hidden wires in a live circuit, locating underground wire breakpoints, finding socket switch positions, tracing cables on a PoE switch, NCV detection, and socket testing.
6.2. Network Cable Hunting Mode
This mode helps accurately find a specific network cable among many others.
- Insert one end of the RJ45 network cable into the Network Cable Tracking port on the Transmitter (825T).
- Set the Transmitter switch to 'Scan' mode.
- Turn on the Receiver (825R) and adjust its sensitivity.
- Move the Receiver's probe along the network cables. The indicator on the Receiver will turn green, and an audible signal will be emitted when the probe approaches the target cable.
Image: Network Cable Locate function, showing how to connect the RJ45 cable to the transmitter and use the receiver to find the cable.
6.3. Circuit Breaker Hunting Mode (Air Switch Detection)
This mode is used to identify the correct circuit breaker for a specific power outlet. Note: This function only supports 120V systems.
- Plug the Socket Tester (825M) into the power outlet connected to the circuit you want to test.
- Short press the "Socket" button on the Receiver (825R). The red indicator light on the Receiver's "Socket" button will illuminate, indicating it's in circuit breaker hunting mode.
- Move the Receiver's probe near the circuit breakers in the distribution box. The target circuit breaker will be identified by an audible signal from the Receiver.
Image: Digital Circuit Breaker Positioning feature, where the 825M Socket Tester is plugged into an outlet and the 825R Receiver is used to locate the corresponding circuit breaker in the panel.
6.4. Socket Test Function
The Socket Tester (825M) can be used independently to check the wiring status of a power socket.
- Plug the Socket Tester (825M) directly into a power outlet.
- Observe the indicator lights on the Socket Tester. The pattern of illuminated LEDs will indicate the wiring condition (e.g., Correct, Open Ground, Open Neutral, etc.). Refer to the table below for interpretation.
Image: Socket Test function, showing the 825M Socket Tester plugged into an outlet and a table explaining LED patterns for different wiring conditions.
6.5. NCV Test Pen Function
The Receiver (825R) features a Non-Contact Voltage (NCV) detection function to determine if a device or location has live power.
- Turn on the Receiver (825R).
- Press the "NCV" button.
- Bring the tip of the Receiver's probe close to the socket or live wire. The Receiver will emit an audible "didi" sound, and the signal indicator LEDs will light up, indicating the presence of live voltage.
Image: NCV Induction Pen feature of the receiver detecting live voltage near wires.
7. Additional Features
- LED Lights: The Receiver (825R) is equipped with LED lights to ensure good visibility when working in low-light areas.
- Sensitivity Adjustment: The Receiver's sensitivity can be adjusted using the rotary dial to fine-tune detection for various environments and cable types.
- Type-C Charging: Both the Transmitter and Receiver are powered by rechargeable lithium batteries and can be conveniently charged via a Type-C interface.
8. Specifications
| Category | Parameter | Value |
|---|---|---|
| Trace AC Power Cable | Product Model | NF-825TMR |
| Trace Power Voltage Range | AC 90V~250V | |
| Interface Type | Alligator clip | |
| Transmitter Distance | 200m | |
| Transmitter Frequency | 157KHz | |
| Detecting Depth | 0~0.5m | |
| Network Cable Testing | Cable Type | CAT5 / CAT6 |
| Network Interface Type | RJ45 | |
| Transmitter Frequency | 455KHz | |
| Transmitter Distance | 600m | |
| Air Circuit Breaker Tracking | Detecting Depth | 2~3cm |
| Socket Cable Sequence Test | Testing Voltage Range | AC 90V~250V, 50/60Hz |
| NCV Detecting | AC 90V~1000V, 50/60Hz | |
| LED Lamp | Yes | |
| Power Supply | 7.4V/700mAh Lithium Battery | |
| Power Adapter Spec | DC 5V/1A Type-C | |
| Working Temperature | 0~122 °F (0~50 °C) | |
| Working Humidity | ≤90% no condensation | |
| Storage Temperature | 14~122 °F (-10~50 °C) | |
| Transmitter Size | 72 x 34 x 148mm | |
| Receiver Size | 40 x 34 x 205mm |
Image: NF-825TMR Parameters Accessories table.
9. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: Recharge the lithium batteries regularly, even if the device is not in use, to maintain battery health. Avoid fully discharging the batteries for extended periods.
- Calibration: The device is factory calibrated. Do not attempt to recalibrate it yourself.
10. Troubleshooting
- No Signal Detection: Ensure the transmitter is properly connected and powered on. Adjust the receiver's sensitivity. Check battery levels of both units.
- Weak Signal: Increase the receiver's sensitivity. Ensure there are no major obstructions or interference sources.
- Transmitter Emits Current Sound: When the transmitter uses a strong power function, a slight current sound is normal. This is due to the transformer boosting voltage and does not affect normal operation.
- Socket Test LEDs Not Lighting Up: Ensure the socket has power. Check the socket for proper wiring.
- Circuit Breaker Hunting Not Working: Confirm the system is 120V (if applicable for your region). Ensure the Socket Tester is correctly plugged in and the Receiver is in the correct mode.
11. User Tips
- For strong current hunting, always start with lower sensitivity and gradually increase it to pinpoint the exact location.
- When tracing network cables, ensure the RJ45 connection is firm to get an accurate signal.
- Be aware of the voltage limitations for specific functions, such as the 120V limit for circuit breaker hunting.
- If you are in a region with 220V power, ensure you are using the correct plug type (EU or UK) for the socket tester, if available for your model.
- Always double-check the wiring status indicated by the socket tester before performing any electrical work.
12. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official NOYAFA website. Keep your proof of purchase for warranty claims.
