1. Product Overview
The BT-TH05 is a compact and high-precision smart Bluetooth temperature and humidity sensor designed for real-time environmental monitoring. It integrates with the Tuya Smart or Smart Life application, allowing users to track conditions, set alarms, and even automate other smart devices when paired with a Bluetooth gateway. Its intuitive display provides immediate comfort indicators.
Figure 1: BT-TH05 Sensor with Tuya and Bluetooth logos
2. Package Contents
- BT-TH05 Temperature and Humidity Sensor
- CR2032 Battery (pre-installed)
- User Manual (this document)
3. Setup and Installation
3.1 Battery Installation
The BT-TH05 sensor comes with a pre-installed CR2032 battery. If replacement is needed, gently open the battery compartment on the back of the device and insert a new CR2032 battery, ensuring correct polarity.
3.2 App Installation
- Download the 'Tuya Smart' or 'Smart Life' app from your smartphone's app store (iOS or Android).
- Register or log in to your account.
3.3 Device Pairing (Bluetooth)
- Ensure Bluetooth is enabled on your smartphone.
- Open the 'Tuya Smart' or 'Smart Life' app.
- Tap '+' or 'Add Device'. The app should automatically discover the 'Temp & Humidity Sensor'.
- Select the device and follow the on-screen prompts to complete pairing.
3.4 Connecting to a Bluetooth Gateway (Optional for Remote Access)
For remote monitoring, scene association, and third-party voice control, a Tuya Bluetooth gateway is required. If you have a gateway:
- Ensure your Bluetooth gateway is set up and connected to the app.
- In the app, navigate to your Bluetooth gateway device.
- Look for an option to 'Add sub-device' or 'Associate Bluetooth devices'.
- Select the 'Temp & Humidity Sensor' from the list of discovered devices and confirm to add it to the gateway.
Video 1: Demonstration of adding the temperature and humidity sensor to the Tuya app and connecting it to a Bluetooth gateway.
3.5 Placement Options
The sensor is designed for versatile placement. It can be:
- Placed on a flat surface (e.g., table, shelf).
- Attached to a wall using adhesive.
- Hung on a hook or door handle.
Figure 2: Multiple placement options for the BT-TH05 sensor.
4. Operating Instructions
4.1 Display Information
The 40mm LCD screen displays the current temperature and humidity. It also features an intuitive comfort indicator:
- Smiling face (^_^): Indicates comfortable conditions (18°C-28°C / 64.4°F-82.4°F and 40%RH-65%RH).
- Frowning face (-_-): Indicates uncomfortable conditions (outside the comfortable range).
Figure 3: Intuitive Comfort Indicator on the LCD screen.
4.2 Temperature Unit Switch
To switch between Celsius (°C) and Fahrenheit (°F), simply press the reset button on the device once. The unit will update on both the screen and in the app.
Figure 4: Switching temperature units.
4.3 App Monitoring and History Records
- Local Monitoring: When within Bluetooth range, you can view real-time temperature and humidity data directly in the 'Tuya Smart' or 'Smart Life' app.
- Remote Monitoring: If connected to a Tuya Bluetooth gateway, you can monitor the sensor's data from anywhere with an internet connection.
- History Records: The app records temperature and humidity history, displaying it graphically. You can also export this data to your email address.
Figure 5: Viewing temperature and humidity records in the app.
4.4 Temperature and Humidity Alarms
You can set custom upper and lower limits for both temperature and humidity within the app. If the measured values exceed these limits, you will receive an alarm notification on your mobile device.
Figure 6: Setting temperature and humidity alarms in the app.
4.5 Scene Association and Automation (Requires Bluetooth Gateway)
When connected to a Bluetooth gateway, the sensor can act as a data source for smart home automation. You can create rules in the app to link the sensor with other smart devices:
- Automatic Humidifier Control: Automatically turn on or off a smart humidifier when a certain humidity level is reached.
- Automatic Heater Control: Automatically turn on or off a smart electric heater when the temperature drops below a preset level.
- Automatic Air Conditioner Control: Automatically turn on or off a smart air conditioner when a certain temperature is reached.
Figure 7: Automatic humidifier control via scene association.
Figure 8: Automatic electric heater control via scene association.
Figure 9: Automatic air conditioner control via scene association.
4.6 Third-Party Voice Support (Requires Bluetooth Gateway)
The sensor supports integration with Amazon Alexa and Google Home Assistant. With a connected Bluetooth gateway, you can inquire about the current temperature and humidity using voice commands.
Figure 10: Voice control integration with smart speakers.
5. Maintenance
5.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
5.2 Battery Replacement
When the battery power is low, the app will send a low battery alarm message, reminding you to change the CR2032 battery. Replace the battery promptly to ensure continuous operation and accurate readings.
Figure 11: Low power alarm notification.
6. Troubleshooting
6.1 Device Not Connecting to App
- Ensure Bluetooth is enabled on your phone.
- Make sure the sensor is within Bluetooth range of your phone or gateway.
- Check if the battery is properly installed and has sufficient charge.
- Restart the app and try pairing again.
6.2 Inaccurate Readings
- Ensure the sensor is not placed near heat sources (e.g., direct sunlight, heaters) or cold sources (e.g., air conditioning vents).
- Avoid placing the sensor in areas with high airflow or extreme humidity fluctuations.
- Allow the sensor to stabilize for a few minutes after placement or battery change.
6.3 Data Update Frequency
The sensor reports temperature and humidity data based on the following rules:
- Device not connected (standalone): Updates immediately if ambient temperature changes by more than 0.5°C or humidity changes by more than 5%. Otherwise, updates every 60 minutes.
- Bluetooth connected (to phone): Updates immediately if ambient temperature changes by more than 0.5°C or humidity changes by more than 5%. Otherwise, updates every 10 minutes.
- Gateway connected: Updates immediately if ambient temperature changes by more than 0.5°C or humidity changes by more than 5%. Otherwise, updates every 10 minutes.
7. Specifications
| Feature | Specification |
|---|---|
| Model | TH05 |
| Material | ABS |
| Size | 43 x 43 x 10 mm |
| Voltage | DC2.5V-3V |
| Battery | CR2032 (Installed) |
| Wireless Type | Bluetooth 5.0 BLE |
| Temperature Measurement Range | -9.9℃ to 60℃ (-49.8°F to 140°F) |
| Temperature Accuracy | ±1℃ |
| Humidity Measurement Range | 0%RH to 99%RH |
| Humidity Accuracy | ±5%RH |
| Individual Weight | 20g |
Figure 12: Product parameters and dimensions.
8. User Tips
- For full smart home integration, remote monitoring, and voice control features, ensure you have a Tuya Bluetooth gateway.
- Utilize the intuitive comfort indicator on the display for a quick visual check of your environment.
- Regularly check the app for low battery notifications to avoid interruptions in monitoring.
- Place the sensor in a central location away from direct drafts or heat sources for the most accurate ambient readings.
- Leverage the scene association feature to automate climate control devices like humidifiers, heaters, or air conditioners for optimal comfort and energy efficiency.
Figure 13: Diverse application scenarios for the sensor.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt for any warranty claims.
