Tuya WiFi Temperature and Humidity Sensor with External Probe User Manual

1. Introduction

The Tuya WiFi Temperature and Humidity Sensor is a smart device designed to monitor environmental conditions both indoors and in specific external locations using its included probe. Featuring a clear digital LCD screen, it provides real-time temperature and humidity readings. This sensor integrates seamlessly with the Tuya Smart Life app, allowing for remote monitoring, data recording, and smart automation. It also supports voice control via Google Assistant and Amazon Alexa, offering a convenient way to keep track of your environment.

2. Key Features

• High Precision Sensing: Utilizes top-tier sensors to ensure accurate temperature and humidity measurements.
• Dual Temperature Monitoring: Simultaneously displays indoor temperature and external probe temperature.
• External Probe: Includes a 100cm long, waterproof external probe for monitoring temperatures in aquariums, freezers, or outdoor areas. Available in round or flat wire versions.
• Smart Life App Integration: Connects to the Tuya Smart Life app for remote monitoring, data logging, and historical curve analysis.
• Real-time Alerts: Set custom temperature and humidity thresholds in the app to receive instant notifications.
• Voice Control: Compatible with Google Assistant and Amazon Alexa for convenient voice-activated queries of current temperature and humidity.
• Smart Automation: Create automation rules within the Smart Life app to link the sensor with other smart devices (e.g., control an air conditioner based on temperature readings).
• LCD Display: Clear digital screen for easy viewing of current temperature (indoor and probe) and humidity.
• Low Battery Alert: Visual indicator on the LCD screen and app notification for low battery status.
• Data Export: Export historical temperature and humidity data from the app for analysis.

3. Specifications

4. Package Contents

Please check the package contents upon receipt. If any items are missing or damaged, contact customer support.

• 1 x Tuya WiFi Temperature and Humidity Sensor Unit
• 1 x External Temperature Probe (100cm)
• 1 x Double-sided Adhesive Tape / Magnetic Sheet (for mounting)
• 1 x User Manual (this document)

Note: AAA batteries (LR03-1.5V) are NOT included and must be purchased separately.

5. Setup Guide

5.1 Prerequisites

• A smartphone (iOS or Android) with the Tuya Smart Life app installed.
• A 2.4GHz Wi-Fi network. Ensure your Wi-Fi router is constantly online and the 2.4GHz band is enabled.
• 2 x LR03-1.5V/AAA alkaline batteries (not included). Do not use rechargeable or mixed batteries.

5.2 Battery Installation

1. Open the battery compartment cover on the back of the sensor.
2. Insert two LR03-1.5V/AAA alkaline batteries, ensuring correct polarity.
3. Close the battery compartment cover.

5.3 Device Configuration (Pairing with Smart Life App)

1. Ensure your smartphone's Bluetooth is enabled and the Tuya Smart Life app has Bluetooth permissions.
2. Open the Tuya Smart Life app and log in or register a new account.
3. Tap the "+" icon in the top right corner to add a device.
4. The app should automatically discover the sensor via Bluetooth. If not, manually select "Add Device" and search for "Temperature and Humidity Sensor" or similar.
5. Follow the on-screen instructions to connect the sensor to your 2.4GHz Wi-Fi network. You will need to enter your Wi-Fi password.
6. Once successfully added, you can rename the device and assign it to a room.

5.4 Mounting the Sensor

Choose a suitable location for the sensor, ensuring it has good Wi-Fi signal strength. You can use the provided double-sided adhesive tape or magnetic sheet to mount it on a wall or other surface.

• Indoor Placement: For accurate indoor readings, place the main unit away from direct sunlight, drafts, or heat sources.
• External Probe Placement: The external probe can be used to monitor temperatures in aquariums, refrigerators, freezers, or outdoors. Ensure the main unit remains indoors and the probe cable is routed appropriately. The probe is waterproof, but the main unit is not.

6. Operating Instructions

6.1 Viewing Data on the Device

The LCD screen displays the following information:

• "OUT": Temperature measured by the external probe.
• "IN": Indoor temperature measured by the main unit.
• Humidity: Indoor humidity measured by the main unit.
• Wi-Fi Connection Icon: Indicates network status.
• Low Battery Icon: Appears when batteries are low.

6.2 Using the Smart Life App

Once connected, open the Smart Life app to access your sensor's features:

• Real-time Monitoring: View current indoor temperature, humidity, and external probe temperature.
• Historical Data: Access graphs showing temperature and humidity changes over time (daily data stored for 7 days, minimum granularity 1 hour).
• Set Alarms: Configure temperature and humidity thresholds. You will receive notifications if readings exceed or fall below these set values.
• Data Export: Export historical data to your email for further analysis.

6.3 Voice Control (Google Assistant / Amazon Alexa)

Integrate your sensor with Google Assistant or Amazon Alexa for voice commands:

1. Ensure your sensor is successfully configured in the Smart Life app.
2. Open the Google Home or Amazon Alexa app.
3. Link your Smart Life account within the third-party smart speaker app (usually found under "Skills" or "Works with Google").
4. Once linked, you can ask for temperature readings, e.g., "Alexa, what's the [device name] temperature?" or "OK Google, what's the [device name] temperature?".

6.4 Smart Automation

Leverage the sensor's data to create automated scenarios with other smart devices in the Smart Life app:

• Go to the "Smart" section in the Smart Life app.
• Create a new automation.
• Set conditions based on the sensor's temperature or humidity readings (e.g., "When environment temperature is higher than 25℃").
• Define actions for other smart devices (e.g., "Then turn on the air conditioner").

Note on Automation Triggering: The sensor uses an "Edge Triggered" principle. An action is only triggered when the condition crosses the set threshold. For example, if you set an automation to turn on the AC when temperature > 25℃, it will trigger when the temperature rises from 24.9℃ to 25.1℃. If the temperature is already above 25℃ when the automation is set, it will not trigger until the temperature drops below 25℃ and then rises above it again.

7. User Tips

• Battery Quality: Always use high-quality LR03-1.5V alkaline batteries. Inferior or mixed batteries can lead to configuration failures or rapid battery drain.
• Signal Strength: After initial setup, place the sensor in an area with good Wi-Fi signal strength to optimize battery life. Poor signal can increase power consumption.
• Temperature Stabilization: For accurate readings, allow the sensor approximately 30 minutes to stabilize and match the ambient room temperature after placement.
• External Probe Functionality: The external probe is designed for temperature measurement only and does not support humidity measurement.
• Probe Safety: Do not place the external probe in food or water intended for human consumption.
• Sharing Access: You can share device control with family or friends through the Smart Life app's sharing function or by creating a virtual home.

8. Maintenance

8.1 Battery Replacement

When the low battery icon appears on the LCD screen or you receive a low battery alert in the app, replace the two LR03-1.5V/AAA alkaline batteries promptly. Follow the battery installation steps in Section 5.2.

8.2 Cleaning

Wipe the sensor unit and external probe with a soft, dry cloth. Do not use abrasive cleaners or immerse the main unit in water.

8.3 Environmental Considerations

The main sensor unit is designed for indoor use only and is not waterproof. The external probe is waterproof and can be used in damp environments, but ensure its cable is not damaged.

9. Troubleshooting (FAQ)

Q: Why does the network testing function on the device properties page always fail?

A: To conserve battery power, the sensor enters a sleep mode and shuts down its network connection when not actively reporting data. The network testing function requires the device to be continuously online, which would rapidly drain the battery. Therefore, the test often fails while the sensor is sleeping. The sensor will automatically wake up and connect to the network at fixed intervals or when temperature/humidity changes exceed set thresholds to report data.

Q: I'm experiencing errors with temperature and humidity readings. What should I do?

A: All temperature and humidity sensors have a certain margin of error. This sensor has an accuracy of ±1℃ for temperature and ±5%RH for humidity. Readings within these ranges are considered normal. Additionally, due to heat conduction principles, the sensor requires approximately 30 minutes to stabilize and provide accurate readings consistent with the ambient environment after initial placement or significant environmental changes.

Q: Why can't I see temperature/humidity normally on my Google Home/Amazon Alexa app, or set up automation with them?

A: Third-party smart speakers like Google Home and Amazon Alexa typically do not have dedicated control panels for temperature and humidity sensors within their native apps. While direct display might not be available, the voice query function is supported. You can ask your smart speaker for the current temperature and humidity. However, creating automation routines or routes directly on these third-party platforms based on the sensor's readings is generally not supported; automation should be configured within the Tuya Smart Life app.

Q: What should I do if device configuration (pairing) fails?

A: Try the following steps:

1. Restart your Wi-Fi router and try again.
2. Ensure your mobile device is connected to a 2.4GHz Wi-Fi network.
3. Verify that the Smart Life app has Bluetooth permissions and your phone's Bluetooth is turned on. If your phone uses low-power Bluetooth with GPS, ensure location services are also enabled.
4. Check your internet connectivity to ensure the router is functioning correctly.
5. Double-check that the Wi-Fi password entered during configuration is correct.
6. Confirm that your Wi-Fi router does not have features like MAC address whitelisting enabled that might restrict device access.
7. If your 2.4GHz and 5GHz Wi-Fi bands share the same SSID (network name), try changing the SSID of the 2.4GHz band and connect your smartphone to it specifically.
8. If all else fails, turn off your phone's Bluetooth, then long-press the sensor's Reset Button (refer to Figure 5) for 5 seconds until the indicator light flashes slowly. Then, in the Smart Life app, select the option for "slow flashing indicator light" to enter AP mode and follow the app's guidance for configuration.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the seller's policy or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.