C52A2N4 - Voice recorder Dahua Technology - Free user manual and instructions
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| Product type | Digital Voice Recorder |
| Brand | Dahua Technology |
| Model | C52A2N4 |
| Dimensions (H x W x D) | 100 x 26 x 12 mm |
| Weight | 45 g |
| Built-in microphone | Yes, high-sensitivity |
| Speaker | Yes, built-in |
| Power supply | Rechargeable 3.7V lithium battery |
| Charging interface | USB 5V / 500mA |
| Recording format | WAV (PCM) and MP3 |
| Recording bitrate | 32 kbps - 192 kbps |
| Storage support | microSD card (max 32 GB) |
| USB interface | USB 2.0 high speed |
| Main functions | High-quality audio recording, playback, pause, fast forward/reverse |
| Additional functions | Noise reduction, voice-activated recording, date/time stamp |
| Operating system compatibility | Windows 7/8/10, macOS |
| Maintenance | Clean the casing with a soft, dry cloth |
| Cleaning instructions | Do not use water or cleaning agents; avoid dust |
| Safety warnings | Do not disassemble or expose to moisture |
| Spare parts availability | Authorized service centers have replacement batteries and covers |
| Repairability | Battery and microSD slot are user-replaceable; other repairs require service |
Frequently Asked Questions - C52A2N4 Dahua Technology
How do I transfer recordings to my computer?
Connect the voice recorder to your computer using the included USB cable. The device will appear as a removable storage drive. You can then copy or move the audio files (usually in WAV or MP3 format) to your computer.
How long does the battery last on a full charge?
The built-in lithium battery typically lasts up to 20 hours of continuous recording, depending on the recording quality and whether features like voice activation are used. Charging takes about 2 hours via USB.
What memory cards are compatible with the C52A2N4?
The recorder supports microSD and microSDHC cards up to 32GB. For reliable performance, use a Class 10 card.
How do I set the date and time on my voice recorder?
Go to the system settings menu on the device, select Date & Time, and use the navigation buttons to adjust the values. The date/time stamp will be embedded in the file metadata for easier management.
Can I record phone calls with this device?
Yes, you can place the recorder near the phone or use an external microphone (not included) to capture conversations. However, always respect local privacy laws and obtain consent when required.
How do I delete files from the recorder?
Select the file you want to delete and press the Delete button on the device, or connect it to a computer and remove the files directly from the removeable disk.
What is the recording quality and format?
The C52A2N4 records in WAV (uncompressed) or MP3 (compressed) format. Bitrate settings range from 32 kbps (long recordings) to 192 kbps (higher quality). Choose WAV for maximum fidelity or MP3 for longer sessions.
How do I activate voice-activated recording?
In the recording menu, enable Voice Activation (VOR). The device will automatically start recording when it detects sound and pause when silence persists for a few seconds. This saves storage and battery.
Is the device compatible with Windows and Mac?
Yes, the voice recorder appears as a mass storage device (USB MSC), so it works with Windows 7+ and macOS without additional drivers.
How should I clean and maintain my voice recorder?
Use a soft, lint-free cloth slightly dampened with water only to wipe the exterior. Do not use solvents or let moisture enter the ports. Regularly back up your files and disconnect the USB cable by safely ejecting the device.
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USER MANUAL C52A2N4 Dahua Technology
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Product information
Brand : Dahua Technology
Model : C52A2N4
Category : Voice recorder