1. はじめに
This manual provides detailed instructions for the setup, operation, and maintenance of your LinknLink eTHS WiFi Smart Temperature and Humidity Monitor Sensor. Please read this manual thoroughly before using the device to ensure proper functionality and safety.
1.1 安全情報
- デバイスを水や湿度の高い環境に置かないでください。
- デバイスを極端な温度や直射日光にさらさないでください。
- Use only the specified power adapter (5V mini USB) to prevent damage.
- 落としたり、強い衝撃を与えないでください。
- 自分でデバイスを分解したり修理したりしないでください。 サポートが必要な場合は、カスタマー サポートにお問い合わせください。
2.製品オーバーview
2.1 主な特徴
- Accurate and Fast Reading: Equipped with a Swiss-made Sensirion sensor, providing temperature accuracy up to ±0.54°F/±0.3°C and humidity accuracy up to ±2%RH. Data refreshes every 2 seconds.
- Wi-Fi Connection Without Hub: Connects directly to 2.4G Wi-Fi, eliminating the need for a separate hub.
- App Real-Time Status and Alert: View current status and 24-hour data curves. Set customizable high and low limits for immediate alerts on your phone.
- FREE Data Storage and Export: Offers up to 3 years of free data storage. Export full data to Excel at any time.
- Works with Alexa/Google: Voice control compatibility with Amazon Alexa and Google Home for temperature and humidity inquiries. Supports Alexa Routines for advanced automation.
- TH2MQTT Home Assistant: Integrates with Home Assistant via MQTT protocol for advanced home automation based on real-time data.
2.2 箱の中身
- LinknLink eTHS Sensor Unit
- Sensor Cable (USB)
- ユーザーガイド
2.3 製品図
Below is an image of the LinknLink eTHS sensor and its accompanying mobile application interface.

Figure 1: LinknLink eTHS Sensor and App Interface. The compact sensor unit is shown next to a smartphone displaying current temperature and humidity, along with historical data graphs and alert settings.
3. 仕様
| 仕様 | 価値 |
|---|---|
| モデル番号 | イーサリアム |
| パッケージ寸法 | 2.95 x 1.85 x 1.54インチ |
| アイテム重量 | 1.76オンス |
| ブランド | リンクンリンク |
| 特集 | 高精度 |
| 色 | 白 |
| 外側素材 | プラスチック |
| 表示タイプ | 表示なし |
| 接続技術 | Wi-Fi(2.4G) |
| 温度精度 | ±0.54°F /±0.3°C |
| 湿度精度 | ±2%RH |
| データ更新レート | 2秒ごとに |
4.セットアップガイド
4.1 アプリのインストール
- 検索する the "LinknLink" app in your smartphone's app store (Google Play Store for Android or Apple App Store for iOS).
- アプリケーションをダウンロードしてインストールします。
- 新しいアカウントを登録するか、すでにアカウントをお持ちの場合はログインしてください。
4.2 Device Power-Up and Wi-Fi Connection
The LinknLink eTHS sensor is designed for convenient installation, powered by a 5V mini USB cable.

Figure 2: Convenient USB-powered installation of the eTHS sensor. The image shows a hand connecting a USB cable to the sensor, highlighting its battery-free operation and simple setup.
- Plug the provided USB sensor cable into the LinknLink eTHS sensor unit.
- Connect the other end of the USB cable to a 5V USB power source (e.g., a USB wall adapter, computer USB port).
- The device will power on, and an indicator light will show its status.
- Open the LinknLink app and follow the on-screen instructions to add a new device. Ensure your smartphone is connected to a 2.4G Wi-Fi network.
- The eTHS sensor connects directly to your Wi-Fi network, eliminating the need for a separate hub.

Figure 3: Direct Wi-Fi connection of the eTHS sensor, showing how it connects to a router without an intermediate hub, unlike other sensors.
5. 操作手順
5.1 Real-Time Monitoring and Alerts
The LinknLink eTHS allows you to monitor environmental conditions remotely and receive alerts for significant changes.

Figure 4: Remote monitoring capabilities of the eTHS sensor in diverse environments such as a greenhouse, wine cellar, and animal incubator.
- Open the LinknLink app to view リアルタイムの温度と湿度のデータ。
- The app displays a 24-hour data curve, allowing you to track trends.
- Set higher and lower temperature/humidity limits within the app.
- Receive immediate push notifications on your phone if readings exceed or fall below your set limits.

図5:例ample of a high-temperature alert notification received on a smartphone, demonstrating the sensor's ability to notify users of environmental changes.
5.2 データの保存とエクスポート
The eTHS sensor offers extensive data logging capabilities.
- Access detailed historical data within the LinknLink app.
- The device provides up to 3 years of free data storage.
- You can export the full data history to an Excel file for record-keeping or analysis at any time.

図6: Viewing and exporting historical temperature and humidity data from the eTHS sensor to a computer, with a smartphone displaying data trends.
5.3 音声制御統合
The LinknLink eTHS is compatible with popular voice assistants.
- Link your LinknLink account with Amazon Alexa or Google Home through their respective applications.
- Once linked, you can ask Alexa or Google Assistant for the current temperature or humidity in the room where the sensor is located.
- Example commands: "Alexa, what's the temperature in the living room?" or "Hey Google, what's the humidity in the basement?"

Figure 7: The eTHS sensor's compatibility with Alexa and Google Home, demonstrating how it can be used in routines to trigger actions based on motion detection.
6. 高度な機能
6.1 TH2MQTT Home Assistant Integration
The eTHS sensor supports TH2MQTT, a bridge that connects the temperature and humidity sensor to Home Assistant using the MQTT protocol. This enables advanced automation scenarios.
- Monitor and react to changes in temperature and humidity within Home Assistant.
- Trigger actions such as turning on an air conditioner when the temperature is too high or activating a humidifier when humidity drops below a certain level.
- Automate your home environment based on real-time data.
6.2 Using Temperature/Humidity as Alexa Routine Triggers
While Alexa natively supports motion sensors as routine triggers, temperature and humidity sensors are not directly supported as events. However, LinknLink provides a smart workaround using a virtual "Toggle" device.
Video 1: Tutorial on how to use the LinknLink eTHS sensor to trigger Alexa Routines based on temperature or humidity changes. This video demonstrates the process of creating a virtual toggle device in the LinknLink app and linking it to Alexa to enable advanced automation.
- Create a Virtual Toggle Device: In the LinknLink app, navigate to "Smart Services" and create a "Toggle State" device. This virtual device has two states: "Triggered" and "Standby".
- Link to Alexa: The "Toggle" device will be discovered by Alexa as a motion sensor, which also has two states: "Motion Detected" and "No Motion Detected". These states will mirror the "Triggered" and "Standby" states of your virtual toggle.
- Create Routines in LinknLink App:
- Create a routine where the eTHS temperature rising above a certain threshold (e.g., 25°C) changes the "Toggle" device state to "Triggered".
- Create another routine where the eTHS temperature dropping below a certain threshold (e.g., 24°C) changes the "Toggle" device state to "Standby".
- Create Routines in Alexa App:
- Create an Alexa routine where "When Toggle detects motion" (i.e., temperature is high), Alexa performs a desired action (e.g., turns on a smart fan, sends a notification).
- Create another Alexa routine where "When Toggle detects no motion" (i.e., temperature is normal/low), Alexa performs another action (e.g., turns off the smart fan, sends a notification).
This method effectively uses the virtual toggle as an intermediary to allow temperature and humidity changes to trigger Alexa routines, expanding your home automation possibilities.

Figure 8: An illustrative diagram detailing the process of using a virtual toggle device within the LinknLink App to enable temperature-based triggers for Alexa Routines, allowing control over other smart home devices.
7. メンテナンス
7.1 クリーニング
- Wipe the device clean with a soft, dry cloth.
- Do not use liquid cleaners or aerosol sprays, as they may damage the sensor or electronic components.
7.2ファームウェアアップデート
Periodically check the LinknLink app for available firmware updates. Updates can improve performance, add new features, and enhance security. Follow the in-app instructions to perform any updates.
8。 トラブルシューティング
If you encounter issues with your LinknLink eTHS sensor, refer to the following common troubleshooting steps:
- デバイスが Wi-Fi に接続していない:
- Ensure your Wi-Fi network is 2.4Ghz. The device does not support 5Ghz networks.
- デバイスが Wi-Fi ルーターの範囲内にあることを確認してください。
- アプリに Wi-Fi パスワードが正しく入力されていることを確認します。
- Restart your router and the eTHS sensor.
- 不正確な読み取り:
- Ensure the sensor is not placed near heat sources (e.g., direct sunlight, heating vents) or cold drafts.
- Avoid placing the sensor in areas with high airflow or stagナントエア。
- Allow the sensor to stabilize for at least 30 minutes after placement for accurate readings.
- アプリがデータを表示しない:
- スマートフォンでインターネット接続を確認してください。
- Ensure the eTHS sensor is online and connected to Wi-Fi.
- Close and reopen the LinknLink app.
- 問題が解決しない場合は、デバイスを再度ペアリングしてみてください。
- Alexa/Google Home Not Responding:
- Verify that the LinknLink skill/service is enabled in your Alexa or Google Home app.
- Ensure your eTHS sensor is discovered and listed in the Alexa/Google Home devices.
- 音声コマンドの正確性を確認してください。
9. 保証とサポート
9.1 保証情報
The LinknLink eTHS WiFi Smart Temperature and Humidity Monitor Sensor comes with a standard manufacturer's warranty. Please refer to the product packaging or the official LinknLink web具体的な保証条件については、サイトをご覧ください。
9.2 カスタマーサポート
For further assistance, technical support, or warranty claims, please contact LinknLink customer service through the following channels:
- メールアドレス: [カスタマーサポートのメールアドレスをここに入力してください]
- Webサイト: LinknLink Official Store
- 電話: [カスタマーサポートの電話番号をここに入力してください]
Please have your product model number (eTHS) and purchase information ready when contacting support.





