1. Introduction
The Peakmeter PM6819A is a handheld, multifunctional cable line tester designed for comprehensive wire tracking and testing. This instrument is essential for telecommunication engineers, wiring engineers, and network maintenance personnel. It efficiently detects and traces various cable types, including RJ45, RJ11, telephone lines, and LAN network cables, both underground and within walls. Its capabilities include continuity testing, line finding, and identifying cable breaks.
2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Do not use the device if it appears damaged or is operating abnormally.
- Ensure correct battery installation and replacement.
- Avoid contact with live circuits unless specifically designed for such testing and appropriate safety measures are in place.
- The device is rated CE CAT.III 600V RoHS. Adhere to these safety standards during operation.
- Keep the device away from water and extreme temperatures.
3. Product Overview and Components
The PM6819A consists of two main units: an Emitter (Transmitter) and a Receiver. Each unit has specific functions and ports for various testing scenarios.

Figure 1: The PM6819A Emitter and Receiver units, demonstrating various applications such as tracing cables near a fence, buried pipes, in-wall wiring, underfloor heating, and garden wiring.
Emitter Unit
- RJ45 Port: For connecting to Ethernet cables.
- RJ11 Port: For connecting to telephone lines.
- Alligator Clip Cable: For connecting to other types of wires for tracing.
- Power Button: To turn the emitter on/off.
- Mode Selection: To switch between digital and analog signal modes.
- Charging Port: For recharging the internal battery.
Receiver Unit
- Probe: The elongated tip used to detect the signal from the emitter.
- Sensitivity Adjustment Knob: To adjust the detection sensitivity.
- Power Button: To turn the receiver on/off.
- Headphone Jack: For connecting headphones for clearer audio signal detection in noisy environments.
- LED Indicators: For signal strength and low voltage warnings.

Figure 2: The receiver unit with a headphone jack, allowing for private and clearer audio detection during operation.
4. Specifications
The following table details the technical specifications of the Peakmeter PM6819A.

Figure 3: Detailed specifications and features of the PM6819A device.
| Feature | Specification |
|---|---|
| Wire Track Type | RJ45, RJ11, other wires via attachment |
| Emitter Work Current | 20mA-90mA |
| Receiver Work Current | 40mA-50mA |
| Emitter Charging Current | 500mA |
| Digital Signal Mode | Multifrequency pulse |
| Analog Signal Mode | Audio pulse |
| Max Data Transmission Distance | 1000 meters |
| Data Signal Detection Depth | 0-2 meters |
| Max Analog Signal Transmission Distance | 300 meters |
| Analog Signal Detection Depth | 0-0.3 meters |
| Continuity Indication | Signal indicator used as path resistance indicator; additional indicator light every 100Ω, all lights on above 1KΩ. |
| Continuity Test Resistance | Less than 1KΩ indicates continuity. |
| Low Voltage Indication (Emitter) | Less than 3.7V, LED flashes. |
| Low Voltage Indication (Receiver) | Less than 9V, LED flashes. |
| Emitter Power Supply | DC 1 x 3.7V (Rechargeable Lithium Battery) |
| Receiver Power Supply | DC 1 x 9V 6LR61 Battery |
| Emitter Weight | 144.6g |
| Receiver Weight | 179.6g |
| Emitter Dimensions | 125mm x 66mm x 30mm |
| Receiver Dimensions | 212.5mm x 45mm x 28mm |
| Safety Rating | CE CAT.III 600V RoHS |
| Color | Orange |
| Country of Manufacture | China |
5. Setup
5.1 Battery Installation
- Emitter: The emitter unit is powered by a rechargeable 3.7V lithium battery. Ensure it is charged using the provided charging cable before first use. The low voltage indicator LED will flash when the battery is below 3.7V.
- Receiver: The receiver unit requires one 9V 6LR61 battery. Open the battery compartment on the back of the receiver, insert the 9V battery with correct polarity, and close the compartment. The low voltage indicator LED will flash when the battery is below 9V.
5.2 Connecting Cables
- For RJ45/RJ11 Cables: Connect one end of the network or telephone cable directly to the corresponding RJ45 or RJ11 port on the emitter unit.
- For Other Wires: Use the provided alligator clip cable. Connect the alligator clips to the two ends of the wire you wish to trace.
6. Operating Instructions
6.1 Powering On
Press the power button on both the Emitter and Receiver units to turn them on. Ensure the indicator lights illuminate.
6.2 Wire Tracing (Digital Mode for RJ45/RJ11)
- Connect the RJ45 or RJ11 cable to the emitter's corresponding port.
- Set the emitter to Digital Signal Mode (multifrequency pulse).
- Turn on the receiver and adjust its sensitivity.
- Move the receiver's probe along the suspected path of the cable. The receiver will emit an audible tone and/or illuminate LEDs when it detects the signal. The tone will be strongest directly over the cable.
- For underground cables, the detection depth is up to 2 meters.

Figure 4: The PM6819A receiver unit tracing an underground cable in a garden, indicating a detection range of 23.7 inches (approximately 0.6 meters) for effective localization.
6.3 Wire Tracing (Analog Mode for Other Wires)
- Connect the alligator clips from the emitter to the wire you want to trace.
- Set the emitter to Analog Signal Mode (audio pulse).
- Turn on the receiver and adjust its sensitivity.
- Move the receiver's probe along the suspected path of the wire. The receiver will emit an audible tone, strongest when directly over the wire.
- For analog signals, the detection depth is up to 0.3 meters.
6.4 Continuity Test
- Connect the emitter to the cable or wire using the appropriate connector (RJ45, RJ11, or alligator clips).
- Activate the continuity test function on the emitter.
- Observe the continuity indicator lights on the emitter. If the resistance value is less than 1KΩ, continuity is confirmed, and the corresponding indicator lights will illuminate. An additional indicator light will operate for every 100Ω, and all lights will be on above 1KΩ.
6.5 Line Finding and Break Detection
The PM6819A can help locate specific lines and identify breaks.
- When tracing a cable, a sudden loss or significant decrease in signal strength from the receiver indicates a potential break in the line.
- The device's ability to detect signals through walls and underground makes it effective for locating hidden wiring.

Figure 5: Illustration of the PM6819A detecting a break in an underground cable. The receiver emits sound ('bibibi~') when a signal is present and no sound when the cable is broken.

Figure 6: The PM6819A's capability to find both underground cables and in-wall wiring, demonstrating its versatility.
7. Maintenance
- Cleaning: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Battery Replacement: Replace the 9V battery in the receiver when the low voltage indicator flashes. Recharge the emitter's lithium battery as needed.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the 9V battery from the receiver.
8. Troubleshooting
- No Signal Detection:
- Ensure both emitter and receiver are powered on.
- Check battery levels in both units.
- Verify cable connections are secure.
- Increase receiver sensitivity.
- Ensure the emitter is set to the correct signal mode (digital for RJ45/RJ11, analog for other wires).
- Weak Signal:
- Adjust receiver sensitivity.
- Ensure the cable is within the specified detection depth.
- Environmental interference may affect signal strength; try to minimize external noise.
- Emitter Not Charging:
- Check the charging cable and power adapter.
- Ensure the charging port is clean and free of debris.
9. Warranty and Support
The Peakmeter PM6819A Multifunctional Wire Tracker comes with a one-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance.
For technical support, warranty claims, or service inquiries, please contact your retailer or the manufacturer directly. Please have your purchase receipt and product model number (PM6819A) available when contacting support.