Sonoff WiFi Smart Switch TH Elite Smart Temperature and Humidity Monitoring THR320D 20A

Take complete control over your indoor climate and electrical appliances with the Sonoff WiFi Smart Switch TH Elite (THR320D). Engineered for demanding environments, this 20A smart relay switch combines real-time temperature and humidity tracking with intelligent automation and dry contact switching capabilities.

Real-Time LCD Monitoring

The built-in digital LCD screen refreshes every 5 seconds, giving you an immediate, crystal-clear reading of current temperature and humidity levels directly at the unit. Keep track of climate changes instantly without needing to unlock your smartphone.

High Load Capacity & Dry Contact Output

Rated for up to 20A maximum load, the THR320D easily manages power-hungry equipment such as electric heaters, boilers, fermentation systems, and agricultural gear. Its versatile dry contact output allows seamless integration with traditional contactors, boilers, and heating systems requiring voltage-free switching.

Advanced Data Logging & Local Automation

Optimize your power consumption and track trends with up to 6 months of historical temperature and humidity data, exportable to an hourly-accurate Excel (.xlsx) file. Set up to 8 customized automatic control programs based on real-time environmental thresholds or schedules. With LAN control enabled, your pre-programmed automations run reliably even if the internet connection drops.

Voice Control & Smart Ecosystem Integration

Seamlessly integrate the Sonoff TH Elite with Amazon Alexa and Google Assistant. Check current sensor readings or trigger connected devices hands-free using simple voice commands.

Key Features

• High Power 20A Rating: Safely switches high-power electrical loads and includes isolated dry contact output.
• Integrated LCD Screen: Instant local display of real-time temperature and humidity with 5-second updates.
• Extensive 6-Month Data Logging: Access and export hourly, daily, and monthly environmental logs in .xlsx format.
• Independent Local Automation: Features LAN control and 8 automatic threshold triggers that function without active internet.
• Hands-Free Voice Support: Query climate conditions and switch appliances using Alexa or Google Assistant.
• RJ9 Sensor Interface: Modern plug-and-play sensor connection (compatible with 2.5mm audio jack sensors via an optional RJ9 adapter).