1.製品オーバーview
The Naroote SW-525A is a digital sound level meter designed for accurate measurement of sound levels in various environments. It features a large LCD display for clear readings and can be wall-mounted for convenient placement. This device is suitable for monitoring noise in factories, offices, homes, and other locations.

図1: フロント view of the Naroote SW-525A Decibel Meter displaying a reading of 68.0 dB.
主な特徴:
- Large digital LCD display for clear readings.
- Measuring range of 30-130dB.
- Indicator flashing and buzzer alarm function for high sound levels.
- Wall-mountable design with integrated hanging holes.
- USB powered (DC 5V 1A Micro USB).
2. パッケージ内容
パッケージにすべてのアイテムが揃っていることを確認します。
- 1 x Naroote SW-525A Sound Level Meter
- ユーザーマニュアル (本書) x 1
- USBケーブル1本

図2: Included USB cable for power supply.
3. デバイスコンポーネント
Familiarize yourself with the main components of the SW-525A Decibel Meter:

図3: Labeled diagram of the decibel meter's components, including the LED digital tube display, condenser microphone sensor, alarm switch indicator light, and hook hole.
- LED Digital Tube Display: Shows the current sound level in decibels (dB).
- Condenser Microphone Sensor: Detects ambient sound levels.
- Alarm Switch Indicator Light: Illuminates when the sound level exceeds a set threshold.
- フック穴: Located on the back for wall mounting.
- USB電源入力: 電源供給用のマイクロUSBポート。
- コントロールボタン: (Specific functions not detailed in product data, but typically include power, alarm settings, and calibration adjustments).
4. セットアップ手順
4.1電源接続
- Connect the provided USB cable to the Micro USB port on the side of the SW-525A device.
- Plug the other end of the USB cable into a DC 5V 1A USB power adapter (not included) or a compatible USB power source.
- The device will power on automatically and begin displaying sound levels.
4.2 壁面への取り付け
The SW-525A is designed for wall mounting to ensure stable and continuous monitoring.
- Identify a suitable location on a wall, ensuring it is free from obstructions and at a height that allows for clear visibility and accurate sound measurement.
- Use appropriate screws or hooks (not included) that fit the hanging holes located on the back of the device.
- Securely mount the device to the wall. Ensure the power cable can reach the device without strain.

図4: 後方 view of the device, highlighting the hook holes for wall mounting.
5. 操作手順
5.1 基本操作
- Once powered on, the device will immediately begin measuring and displaying the current sound level in decibels (dB) on the large LED screen.
- The measuring range is 30-130dB. Readings outside this range may not be accurate.
- Ensure the microphone sensor is not obstructed for accurate readings.
5.2アラーム機能
The SW-525A features an indicator flashing and buzzer alarm function to alert users when sound levels exceed a predefined threshold.
- The alarm threshold is typically factory-set or can be adjusted via the control buttons (refer to specific button functions if available on the device).
- When the measured sound level surpasses the set threshold, the alarm indicator light will flash, and a buzzer will sound.
- To silence or reset the alarm, press the appropriate control button (e.g., the alarm switch button, if present).
5.3つの制御ボタン
The device includes control buttons, typically located on the side or bottom, for various settings. While specific functions are not detailed in the general product information, common controls for decibel meters include:
- 電源ボタン: To turn the device on/off (if not always-on when powered).
- 上/下ボタン: For adjusting alarm thresholds or other settings.
- Mode/Set Button: To cycle through display modes or enter settings.

図5: 側 view showing the USB port and control buttons. Consult the device for specific button labels and functions.
6. メンテナンス
- クリーニング: デバイスの清掃には、柔らかく乾いた布を使用してください。研磨剤入りの洗剤や溶剤は使用しないでください。
- ストレージ: 長期間使用しない場合は、直射日光や極端な温度を避け、涼しく乾燥した場所にデバイスを保管してください。
- マイクのお手入れ: Keep the microphone sensor clean and free from dust or debris to ensure accurate readings. Avoid touching the microphone directly.
- 電源: Always use a DC 5V 1A Micro USB power source. Using an incorrect power supply may damage the device.
7。 トラブルシューティング
If you encounter issues with your Naroote SW-525A, refer to the following common problems and solutions:
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| デバイスの電源が入りません。 | No power supply or faulty USB cable/adapter. | Ensure the USB cable is securely connected. Try a different USB power adapter or port. Verify the power source provides DC 5V 1A. |
| 不正確または変動する測定値。 | Obstructed microphone, device interference, or environmental factors. | Ensure the microphone is clean and unobstructed. Relocate the device away from strong electromagnetic fields or vibrations. |
| アラームが作動しません。 | Alarm threshold set too high or alarm function disabled. | Check the alarm settings using the control buttons. Ensure the sound level exceeds the set threshold. |
| ディスプレイが空白またはフリーズします。 | 一時的なソフトウェアの不具合または電源の問題。 | Disconnect and reconnect the power supply to restart the device. |
8. 仕様
Detailed technical specifications for the Naroote SW-525A Decibel Meter:
| モデル | SW-525A |
| 測定範囲 | 30~130dB |
| 正確さ | ±1.5 dB (In standard sound 94db @ 1khz) |
| 周波数応答 | 31.5Hz-8.5kHz |
| 周波数の重み付け | A |
| 応答時間 | 速い |
| マイクロフォン | 6 mm Condenser Microphone |
| 力 | DC 5V 1A Micro USB |
| 動作環境 | 0-40°C、10-80%RH |
| 保管温度と湿度 | -10~60℃、10~70%RH |
| 寸法(長さ×幅×高さ) | 約210 x 130 x 30 mm(8.3 x 5.1 x 1.2インチ) |
| 重さ | Approx. 608g (21.8oz) / 0.61 Kilograms |
| メーカー | Naroote |
| 原産国 | 中国 |
| 欧州連合 | 719233947821 |

図6: Device dimensions: 210 mm (8.3 in) length, 130 mm (5.1 in) width, 30 mm (1.2 in) thickness.
9. 保証とサポート
Naroote is committed to providing high-quality products and excellent customer service. If you have any questions regarding product specifications, usage methods, or require assistance with your SW-525A Decibel Meter, please contact our customer support.
For issues such as damaged products due to logistics, or if you are not satisfied with the product, please reach out to us. We aim to provide a satisfactory reply and solution within 24 hours.
具体的な保証の詳細およびサポート チャネルについては、購入書類または販売者の連絡先情報を参照してください。