SONOFF THR320 Origin Smart Temperature and Humidity Monitoring Switch

1. Product Overview

The SONOFF THR320 Origin is a smart temperature and humidity monitoring switch designed to integrate with your smart home system. It supports high-load equipment up to 20A and offers features like local automatic control, historical data query, and voice control compatibility with Amazon Alexa and Google Home. This device requires external sensors (sold separately) for temperature and humidity detection.

Image 1.1: SONOFF THR320 Origin Smart Switch with a connected temperature and humidity sensor, illustrating its primary function.

Key Features:

• 20A Max & Dry Contact Output: Supports high-load connections and dry contact output.
• Temperature/Humidity History Query: Review historical data by hour, day, and month, with up to 6 months of data exportable in .xlsx format.
• Local Automatic Control: Reliable LAN control for automatic operation based on set parameters, even without Wi-Fi.
• Voice Control: Compatible with Amazon Alexa and Google Home for temperature and humidity queries.
• RJ9 4P4C Interface: Upgraded sensor connector for stable and reliable hot-plugging.

Image 1.2: The SONOFF THR320 app interface showing options for manual and automatic control, demonstrating its smart capabilities.

Image 1.3: The SONOFF THR320 app showing detailed 6-month historical data for temperature and humidity, allowing users to track environmental changes over time.

2. Setup

2.1 Wiring Instructions

WARNING: Ensure power is disconnected before performing any wiring. Incorrect wiring can cause damage to the device or personal injury. Consult a qualified electrician if you are unsure.

1. Identify the Live In (L In), Neutral In (N In), Live Out (L Out), and Neutral Out (N Out) terminals on the THR320 device.
2. Connect the incoming Live wire to the 'L In' terminal and the incoming Neutral wire to the 'N In' terminal.
3. Connect the Live wire of your appliance to the 'L Out' terminal and the Neutral wire of your appliance to the 'N Out' terminal.
4. Ensure all connections are secure.

Image 2.1: Detailed view of the SONOFF THR320's wiring terminals and the RJ9 4P4C sensor interface, highlighting connection points.

2.2 Sensor Connection

The THR320 features an RJ9 4P4C interface for connecting external sensors. Compatible sensors include THS01 (Temperature & Humidity Sensor), DS18B20 (Waterproof Temperature Sensor), and MS01 (Soil Moisture Sensor). Simply plug the sensor's RJ9 connector into the device's sensor interface.

Image 2.2: Various sensors compatible with the SONOFF THR320, including temperature, humidity, and soil moisture sensors, demonstrating versatility.

2.3 App Pairing

To pair your THR320 with the eWeLink app:

1. Download the eWeLink app from your smartphone's app store.
2. Power on the THR320. The Wi-Fi indicator will flash.
3. Open the eWeLink app, tap '+' and select 'Bluetooth Pairing'.
4. Follow the on-screen prompts to connect the device to your Wi-Fi network.

3. Operating Instructions

3.1 Manual Control

You can manually turn the connected appliance on or off directly from the eWeLink app at any time, from anywhere. The app displays real-time temperature and humidity readings from the connected sensor.

3.2 Local Automatic Control (LAN Control)

The THR320 supports local automatic control, ensuring reliable operation even if your Wi-Fi connection is temporarily unavailable. You can set up to 8 automatic control programs based on temperature and humidity thresholds. For example, you can configure the device to turn on a fan if the temperature exceeds 27°C and turn it off when it drops below 24°C.

3.3 Temperature/Humidity History Query

Access detailed historical temperature and humidity data through the eWeLink app. You can view data by hour, day, or month. The app allows you to export up to 6 months of historical data in .xlsx format for further analysis.

3.4 Voice Control

Integrate your THR320 with Amazon Alexa or Google Home. Once linked, you can use voice commands to query the current temperature and humidity values.

4. Maintenance

To ensure optimal performance and longevity of your SONOFF THR320:

• Cleaning: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
• Environment: Operate the device within its specified temperature and humidity ranges. Avoid exposure to direct sunlight, moisture, or extreme temperatures.
• Firmware Updates: Regularly check for and install firmware updates via the eWeLink app to benefit from new features and security enhancements.
• Sensor Care: Keep sensors clean and free from obstructions for accurate readings. For waterproof sensors, ensure proper installation to prevent water ingress into the main unit.

5. Troubleshooting

• Device Not Powering On: Check the power connections and ensure the circuit breaker is on. Verify that the input voltage is within the specified range.
• Unable to Pair with App: Ensure your Wi-Fi network is 2.4GHz. Confirm the Wi-Fi indicator is flashing correctly for Bluetooth pairing mode. Keep the device close to your router during pairing.
• Sensor Not Detected/Incorrect Readings: Ensure the sensor is correctly plugged into the RJ9 4P4C interface. Check for any damage to the sensor cable or connector. Note that sensors are sold separately and are required for temperature/humidity monitoring.
• Appliance Not Responding: Verify the wiring of the appliance to the 'L Out' and 'N Out' terminals. Check the appliance itself to ensure it is functional.
• Local Auto Control Not Working: Ensure the auto control programs are correctly configured in the eWeLink app and saved. Verify that the device's internal clock is synchronized.
• Voice Control Issues: Ensure the THR320 is correctly linked to your Amazon Alexa or Google Home account within the eWeLink app. Check your internet connection and voice assistant device.

6. Specifications

7. Warranty and Support

SONOFF products are designed for reliability and performance. For warranty information, please refer to the documentation included with your purchase or visit the official SONOFF website. For technical support, troubleshooting assistance, or further inquiries, please contact SONOFF customer service through their official channels. Keep your purchase receipt for warranty claims.