SONOFF THR316D 16A WiFi Temperature & Humidity Smart Switch
The SONOFF THR316D (TH Elite) is a 16A WiFi smart switch designed for automatic temperature and humidity monitoring and control.
Featuring a built-in LCD display, the device allows users to monitor environmental conditions in real time and automatically control connected electrical equipment based on temperature or humidity thresholds.
Through the eWeLink mobile app, users can remotely control connected devices, configure automatic schedules, and view historical temperature and humidity data.
It is ideal for smart homes, greenhouses, HVAC systems, ventilation, and environmental monitoring applications.
Key Features
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Temperature & Humidity Monitoring: Displays real-time readings from a compatible external sensor.
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LCD Display: Built-in screen shows temperature, humidity, and device status.
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16A Smart Switching: Controls compatible electrical loads up to 16A.
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Automatic Control: Switch connected equipment ON/OFF according to temperature or humidity thresholds.
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WiFi Remote Control: Manage devices through the eWeLink mobile app.
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6-Month History: View historical temperature and humidity data through the eWeLink cloud.
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Voice Control: Compatible with Amazon Alexa and Google Assistant.
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Smart Scheduling: Configure timers, countdowns, and automatic switching schedules.
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Sensor Compatibility: Supports compatible SONOFF temperature and humidity sensors.
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RJ9 Sensor Interface: Dedicated connector for compatible external sensors.
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Smart Scenes: Integrates with other compatible eWeLink smart devices.
Technical Specifications
| Parameter |
Specification |
| Brand |
SONOFF |
| Model |
THR316D |
| Series |
TH Elite |
| Product Type |
WiFi Temperature & Humidity Smart Switch |
| Input Voltage |
AC 100–240V, 50/60Hz |
| Maximum Current |
16A |
| Maximum Resistive Load |
3680W at 230V AC |
| Wireless Connectivity |
WiFi 2.4GHz |
| WiFi Standard |
IEEE 802.11 b/g/n |
| Display |
LCD |
| Sensor Interface |
RJ9 |
| Temperature Monitoring |
With Compatible External Sensor |
| Humidity Monitoring |
With Compatible External Sensor |
| Automatic Temperature Control |
Supported |
| Automatic Humidity Control |
Supported |
| Historical Data |
Up to 6 Months |
| Mobile Application |
eWeLink |
| Voice Assistants |
Amazon Alexa, Google Assistant |
| Enclosure Rating |
IP54 |
| Dimensions |
Approximately 109 × 59 × 40mm |
Compatible Sensors
The SONOFF THR316D supports compatible external sensors, including:
| Sensor |
Measurement |
| SONOFF THS01 |
Temperature & Humidity |
| SONOFF DS18B20 |
Temperature |
| SONOFF MS01 |
Soil Moisture |
Note: Sensors are connected through the dedicated RJ9 interface. Sensor availability and package inclusion depend on the selected product configuration.
Wiring and Connection
| Connection |
Function |
| L IN |
AC Live Input |
| N IN |
AC Neutral Input |
| L OUT |
Switched Live Output |
| N OUT |
AC Neutral Output |
| RJ9 Port |
External Sensor Connection |
Connection Overview:
- Connect the AC live and neutral supply wires to the input terminals.
- Connect the electrical load to the output terminals.
- Connect a compatible external temperature, humidity, or soil moisture sensor.
- Power the device and pair it with the eWeLink app.
- Configure automatic switching thresholds and monitoring settings.
Applications
- Smart Greenhouse Automation
- Temperature-Controlled Ventilation
- Humidity-Controlled Fans
- HVAC Monitoring and Control
- Smart Home Environmental Monitoring
- Agricultural Irrigation Control with Compatible Sensor
- Temperature-Based Heating Control
- Server Room Environmental Monitoring
- Smart Office Automation
Important Notes
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External Sensor Required: Temperature and humidity measurements require a compatible external sensor.
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Electrical Safety: Installation involves mains voltage and must be performed by a qualified electrician.
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Maximum Load: 16A for suitable resistive loads. Motor and inductive loads may require lower ratings.
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WiFi Compatibility: Supports 2.4GHz WiFi networks only.
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Sensor Compatibility: Use supported SONOFF sensors with the appropriate connector.
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Protection: Install suitable circuit breakers and electrical protection devices.
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IP54 Rating: The enclosure provides limited dust and water-splash protection when correctly installed. It is not waterproof or suitable for immersion.
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Automatic Control: Switching accuracy depends on the connected sensor and configured thresholds.
Package Includes