Tuya WiFi Zigbee 3.0 Temperature and Humidity Sensor User Manual

1. Introduction

The Tuya Temperature and Humidity Sensor is designed to monitor your indoor environment, providing real-time data on temperature and humidity levels. This device integrates seamlessly with smart home platforms like Tuya Smart, Smart Life, Amazon Alexa, and Google Home, allowing for remote monitoring, intelligent scene linkage, and voice control. It features high-precision measurement and supports family sharing for multi-user access.

2. Product Features

• High Precision Measurement: Utilizes top-tier sensors to ensure accurate temperature (±1℃) and humidity (±5%RH) readings.
• APP Monitoring & Recording: View real-time data and historical trends graphically via the Smart Life or Tuya Smart app.
• Intelligent Scene Linkage: Use temperature and humidity data as triggers for automated processes with other smart devices (e.g., air conditioners, humidifiers).
• Third-Party Voice Support: Compatible with Amazon Alexa and Google Home for voice-activated queries of current temperature and humidity.
• Family Sharing Function: Share device access with family members for collective monitoring.

Image: Overview of product features including high precision, app control, and intelligent linkage.

3. Specifications

Image: Detailed dimensions and a comparison table for WiFi and Zigbee versions.

4. Setup

4.1 Battery Installation

1. Gently open the back cover of the sensor to access the battery compartment.
2. Insert two LR03-1.5V AAA alkaline batteries, ensuring correct polarity.
3. Close the battery compartment securely.

Note: Batteries are not included. Only use LR03-1.5V alkaline batteries. Rechargeable 1.2V batteries may lead to inaccurate power measurement. Do not mix different types or brands of batteries, or old and new batteries.

4.2 App Installation

• Download the "Smart Life" or "Tuya Smart" app from your smartphone's app store (available on iOS and Android).
• Register for a new account or log in with an existing one.

4.3 Device Pairing (WiFi Version ZY-TH02)

1. Ensure your smartphone is connected to a 2.4GHz WiFi network. (The WiFi version only supports 2.4GHz WiFi).
2. Enable Bluetooth on your smartphone.
3. Open the Smart Life/Tuya Smart app and tap the '+' icon (usually in the top right corner) to add a device.
4. The app may automatically discover the sensor. If not, manually select "Temperature and Humidity Sensor" from the device list.
5. Follow the in-app instructions to connect the sensor. The sensor's indicator light should be fast flashing for normal pairing mode.
6. If pairing fails, long-press the sensor's reset button for 5 seconds to switch to AP mode (slow flashing indicator), then select the AP mode option in the app and follow the guided steps.

4.4 Device Pairing (Zigbee Version ZY-ZTH02)

1. Ensure you have a Tuya Zigbee Hub or Tuya Multi-mode Hub already set up and connected to your Smart Life/Tuya Smart app.
2. Open the Smart Life/Tuya Smart app and tap the '+' icon to add a device.
3. Select your Zigbee gateway and then choose to add a sub-device.
4. Follow the in-app instructions to connect the sensor to your Zigbee hub.

Image: Diagram illustrating the connection differences between WiFi and Zigbee versions, showing the need for a Zigbee Hub for the Zigbee version.

5. Operating Instructions

5.1 APP Remote Monitoring

Once the sensor is successfully paired and connected to the internet, you can monitor the temperature and humidity of your room in real-time from anywhere in the world using the Smart Life/Tuya Smart app.

• Power Saving: The sensor is battery-powered and designed to conserve energy. It will enter a sleep mode when not actively reporting data.
• Data Reporting: Data is reported immediately when the temperature changes by ±0.5℃ or the humidity changes by ±5%RH. Otherwise, the sensor connects to the network and reports data at least once every hour.

Image: Screenshots of the Smart Life/Tuya Smart app interface showing temperature and humidity monitoring, data graphs, and smart scene creation.

5.2 Intelligent Linkage

The high-precision, real-time data from the sensor can be used to create intelligent automation strategies within the Smart Life/Tuya Smart app. For example:

• If the indoor temperature reaches 32.6℃, automatically turn on a connected air conditioner (requires a compatible WiFi IR Remote, purchased separately).
• If the humidity drops below a certain percentage, automatically activate a connected humidifier.

Note: The sensor serves as a data source. Other smart devices (e.g., smart plugs, IR remotes) are required to perform the linkage actions and must be purchased separately.

Image: Diagram showing how the sensor can trigger other smart devices like an air conditioner or humidifier based on temperature and humidity thresholds.

5.3 Voice Control with Alexa/Google Home

After linking your Smart Life/Tuya Smart account to Amazon Alexa or Google Home, you can query the current temperature and humidity using voice commands.

• Voice Commands: "Alexa, what's the temperature of [device name]?" or "OK Google, what's the humidity of [device name]?"
• Limitations: Due to current development interface limitations, Alexa and Google Home may not display temperature and humidity data directly within their apps, nor can they be used to create automation routines based on sensor data. Voice query is the primary function.

Image: Illustration of using voice commands with Amazon Alexa and Google Home to inquire about temperature.

5.4 Sharing Function

You can share access to your temperature and humidity sensor with family members or friends. This allows multiple users to monitor the indoor environment in real-time. This can be done via the app's sharing feature or by creating a virtual home and inviting others to join.

Image: Visual representation of sharing the device's monitoring capabilities with family members through the app.

6. Maintenance

6.1 Battery Care

• Always use LR03-1.5V alkaline batteries for optimal performance and accurate power measurement.
• Do not mix old and new batteries, or batteries of different models/brands.
• Avoid using inferior quality batteries, as this can lead to configuration failures or rapid battery drain. Purchase batteries from reputable retailers.

6.2 Placement

• Install the sensor in an area with good and stable wireless signal strength (WiFi or Zigbee) to optimize battery life. Poor signal can increase power consumption.
• Avoid placing the sensor in locations with dramatic temperature or humidity fluctuations, as this will cause the device to frequently report data, leading to faster battery depletion.
• The sensor is designed for indoor use only and is not waterproof. Do not expose it to water or high humidity for extended periods, as this can corrode the batteries and damage the device.
• Avoid prolonged use in low-temperature environments (e.g., below 0℃), as battery performance can rapidly degrade in such conditions.

7. Troubleshooting

7.1 Configuration Fails (WiFi Version)

• Power/Indicator: Ensure the sensor is powered on and its indicator light is flashing (fast for normal pairing, slow for AP mode).
• WiFi Network: Verify your mobile device is connected to a 2.4GHz WiFi network. The sensor does not support 5GHz WiFi.
• Bluetooth: Confirm the Smart Life/Tuya Smart app has Bluetooth permission and Bluetooth is enabled on your phone. If low-power Bluetooth is tied to GPS, ensure location services are also on.
• Network Connectivity: Check your router and internet connection to ensure they are working properly.
• Password: Double-check that the WiFi password entered in the app is correct.
• Router Restrictions: Confirm your WiFi router does not have access restrictions, such as a MAC address whitelist, that might block the sensor.
• SSID Conflict: If your 2.4GHz and 5GHz WiFi networks share the same name (SSID), try changing the 2.4GHz SSID to a unique name and connect your phone to it specifically during pairing.
• AP Mode: If standard pairing fails, long-press the sensor's reset button for 5 seconds until the indicator flashes slowly to enter AP mode, then follow the AP mode instructions within the app.

7.2 "Device is unresponsive" on Alexa (Zigbee Version)

This is a known issue with Alexa's integration for battery-powered Zigbee devices. Alexa's protocol may request frequent device activations, which can rapidly drain the battery of a sensor designed for power conservation. Other Zigbee 3.0 gateways typically do not experience this problem.

7.3 Inaccurate Temperature/Humidity Readings

• Allow 30 minutes to 1 hour after setup for the sensor to acclimate to its environment and provide accurate measurements.
• All temperature and humidity sensors have a certain margin of error (±1℃ for temperature, ±5%RH for humidity). Readings within this range are considered normal.

7.4 Rapid Battery Consumption

• Using incorrect battery types (e.g., rechargeable 1.2V instead of LR03-1.5V alkaline).
• Mixing different battery types or brands.
• Placement in environments with frequent and dramatic temperature/humidity changes, causing frequent data reporting.
• Prolonged use in low-temperature environments (<0℃).
• Poor network signal strength, forcing the device to increase transmission power.
• High humidity leading to battery corrosion.

7.5 Network Testing Function in App Fails

The sensor conserves power by entering a sleep mode when not actively reporting data. The in-app network testing function requires a continuous connection, which is not supported by battery-powered sensors. Data is reported automatically upon significant environmental changes or at least hourly.

7.6 Historical Data Granularity

Daily charts in the app display historical data at 1-hour intervals. Exported data also has a minimum granularity of 1 hour. Historical data is stored for 7 days, and the displayed values represent averages for each interval.

7.7 Third-Party Smart Speaker Limitations

Alexa and Google Home do not have dedicated control panels for temperature/humidity sensors, so direct display of readings within their apps may be limited. Automation based on sensor data is not supported on these platforms; only voice queries are available. Yandex Alice is not supported.

7.8 Automation Trigger Mechanism

The sensor uses an "Edge Triggered" mechanism for automation. This means an action is only triggered when a condition *crosses* a set threshold, not if it remains above or below it. For example, if an automation is set to "turn on light when temperature > 25℃", the light will turn on when the temperature *rises to* 25℃, but not if it is already above 25℃ when the automation is enabled.

8. User Tips

• For real-time data updates, consider a USB-powered version (e.g., TH06/TH16 models, if available) as battery-powered sensors prioritize energy conservation.
• Always use LR03-1.5V alkaline batteries for optimal performance and accurate power measurement. Avoid rechargeable 1.2V batteries.
• Place the sensor in an area with stable WiFi/Zigbee signal to prolong battery life and ensure consistent data reporting.
• Remember the sensor is for indoor use only and is not waterproof. Protect it from moisture.
• Allow the sensor 30-60 minutes to acclimate to its environment for accurate readings after initial setup or relocation.

9. Warranty and Support

For technical assistance, warranty claims, or any product-related inquiries, please contact the seller or manufacturer directly through your purchase platform. Keep your purchase records for reference.