Walfront TELREC01
Walfront Phone Call Recorder Instruction Manual
Model: TELREC01
1. Introduction
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Walfront Phone Call Recorder. This device is designed to record conversations on analogue phone lines, offering features such as loop recording and easy data access. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
2. Product Overview and Components
The Walfront Phone Call Recorder is a compact device designed for seamless integration with analogue telephone systems. It records audio directly to a Micro SD card (not included) and features a simple interface for ease of use.
2.1 Package Contents
- Walfront Phone Call Recorder Unit
- USB Data Cable
- Telephone Cable (RJ11)
- User Manual (this document)
2.2 Device Features and Ports

This image displays the Walfront Phone Call Recorder from various perspectives, clearly labeling its key components: the Micro SD Card slot, the ON/OFF power switch, the USB port for power and data transfer, and the RJ11 interface for telephone line connection. The top cover is also shown, indicating how to access the Micro SD card slot.

This image shows the main Walfront Phone Call Recorder unit, a small white rectangular box, alongside its two essential cables: a black USB cable for power and data, and a black telephone cable with RJ11 connectors for connecting to the phone line.
- RJ11 Interface: For connecting to the telephone line.
- Micro SD Card Slot: Supports up to 32GB memory cards for storing recordings.
- USB Port: For power supply and data transfer to a computer.
- Power Switch (ON/OFF): To activate or deactivate the recording function.
3. Setup
Follow these steps to set up your Walfront Phone Call Recorder for the first time.
3.1 Inserting the Micro SD Card
- Gently slide off the top cover of the recorder unit.
- Insert a Micro SD card (maximum 32GB, not included) into the designated slot with the gold contacts facing down. Ensure it clicks into place.
- Replace the top cover, ensuring it is securely closed.

This composite image illustrates two crucial setup steps: first, the proper insertion of a Micro SD card into the device's slot, and second, the action of sliding the power switch to the 'ON' position to activate the recorder.
3.2 Connecting to the Telephone Line
The recorder connects between your analogue telephone and the wall jack.
- Disconnect the telephone cable from your analogue phone's base.
- Connect one end of the provided RJ11 telephone cable to the Walfront Phone Call Recorder's RJ11 interface.
- Connect the other end of the provided RJ11 telephone cable to the telephone base.
- Connect your existing telephone cable (from the wall jack) to the remaining RJ11 interface on the recorder.

This diagram illustrates the connection of the telephone recorder. One RJ11 cable connects the recorder to the telephone base, and another cable connects the recorder to the main telephone line coming from the wall. The image emphasizes that the telephone itself is not included.

This diagram shows a typical setup where the phone recorder is connected to an analogue telephone and then to the telephone line, possibly through a router or modem. An arrow highlights the power switch on the recorder, indicating that moving it to 'ON' initiates call recording.
Important Note: This device is designed for analogue phone lines only. It is not compatible with digital phones or IP phones.

This image clearly indicates that the Walfront Phone Call Recorder is exclusively for use with analogue telephones. It visually crosses out 'Digital Phone' and 'IP Phone' to highlight incompatibility, while showing a traditional analogue phone as the supported type.
4. Operating Instructions
4.1 Powering On and Recording
- Ensure the Micro SD card is correctly inserted and the device is connected to the telephone line as described in Section 3.
- Connect the USB cable to the recorder's USB port and the other end to a USB power source (e.g., a USB charger, computer USB port). The device is powered by the telephone system's ASIC, but a USB connection is recommended for consistent power and charging.
- Move the power switch on the side of the recorder to the "ON" position.
- The recorder will automatically begin recording phone calls when a conversation is detected on the line.
The device supports loop recording. When the memory card is full, the oldest recording files will be overwritten by new recordings. This operates on a "first in, first out" basis.
4.2 Data Access and Management
Recorded files are saved in WAV audio format on the Micro SD card.
- To access recordings, ensure the recorder is powered off (switch to "OFF" position).
- Connect the recorder to a computer using the provided USB cable.
- The recorder will be recognized as a U-disk (removable storage device) by your computer.
- Navigate to the device's drive to find and copy the WAV audio files.
- Alternatively, you can remove the Micro SD card and insert it into a card reader connected to your computer to access the files directly.
5. Maintenance
- Keep the device clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to extreme temperatures, humidity, or direct sunlight.
- Do not attempt to disassemble the unit, as this will void the warranty.
- Regularly back up important recordings from the Micro SD card to prevent data loss due to loop recording or card issues.
- If the device is connected to the telephone line continuously, it may require a weekly charge via a USB charger to maintain its internal battery for normal operation.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not recording. | Power switch is OFF. Micro SD card not inserted or full. Incorrect connection to phone line. Using a digital/IP phone. | Ensure switch is ON. Insert/replace Micro SD card; check available space. Verify all RJ11 connections are secure and correct. Ensure you are using an analogue phone. |
| Poor recording quality. | Loose connections. Interference. Low battery. | Check all cable connections. Ensure device is away from other electronic interference. Connect to USB power source for charging. |
| Cannot access files on computer. | Device not powered off before connecting. Faulty USB cable/port. Micro SD card issue. | Ensure recorder is OFF before connecting to PC. Try a different USB cable or port. Try accessing the Micro SD card directly with a card reader. Reformat card if necessary (will erase all data). |
| Recordings are too short or missing. | Loop recording active. Micro SD card issues. | Understand that older files are overwritten when memory is full. Check Micro SD card for errors or try a different card. |
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | TELREC01 |
| Compatible Devices | All analogue phones |
| Memory Storage Capacity | Max 32 GB (Micro SD card, not included) |
| Recording Format | WAV |
| Digital Recording Time | Approx. 3200 minutes (with 32GB card) |
| Loop Recording | Supported (First in, first out) |
| Interface | RJ11 (Telephone), Micro USB (Power/Data) |
| Battery Type | Integrated 3.7V 750mAh Lithium-ion battery |
| Item Weight | 2.82 ounces (approx. 80 grams) |
| Package Dimensions | 6.57 x 2.6 x 1.54 inches |
| Manufacturer | Walfront |
| Country of Origin | China |
8. Warranty and Support
For warranty information and technical support, please refer to the specific terms provided at the point of purchase or contact Walfront customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.
For further assistance, you may visit the Walfront Store on Amazon: Walfront Store
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