SONOFF TH Elite is a smart switch for monitoring temperature and humidity based on ESP32.

th elite

Technical specifications:

Name: TH Elite 16A / 20A
Model: THR316D / THR320D
Input / Output:
THR316D: 100-240V ~ 50 / 60Hz 16A max
THR320D: 100-240V ~ 50 / 60Hz 20A max
Material: PC V0
Wifi: IEEE 802.11 b / g / n 2.4 GHz
Color: White
Dry Contact: 5-30 V, 1A max

With an LCD screen, TH Elite monitors temperature and humidity in real time, once you reach the preset threshold or the changes to the on / off status of the device, you will receive the push notification on your phone.

SONOFF TH Elite has been designed to be able to connect equipment with high load 20A Max.

It is possible to replace the traditional thermostat with dry contact output with TH Elite, to control the boiler or any other heating system controlled by a normal switch.

th elite

With SONOFF TH Elite you can see the historical data of temperature and humidity of 6 months accurate per hour collected in the archive. The archive can be downloaded in xsl format.

th elite

Through smart scene, temperature, humidity, switching on, switching off, TH Elite supports settings such as trigger, switching on, switching off, inversion during the execution of actions. Supports the addition of SONOFF devices to Home Assistant for control and automation via the eWeLink add-on. It is possible to set notifications when the device status changes.

SONOFF TH Elite supports three types of sensors for temperature and humidity monitoring: THS01 temperature and humidity sensor, DS18B20 waterproof temperature sensor and MS01 soil moisture sensor. The sensor connector is upgraded to RJ11, supporting the hot plug making the connection more stable and reliable.

RL560 sensor extension cable can connect SONOFF temperature and humidity sensors to extend the distance of your device. THS01, DS18B20 can be extended to 60M, and the MS01 soil moisture sensor can be extended to 10M.

THS01 sensor

  • Sensor type: temperature and humidity sensor
  • Connector type: RJ11 4P4C
  • Temperature measurement range: –40 ℃ ~ + 85 ° C
  • Humidity measurement range: 0 ~ 100% RH
  • Cable length: 50 cm

DS18B20 sensor

  • Sensor type: waterproof temperature sensor
  • Connector type: RJ11 4P4C
  • Working temperature: -55 ℃ ~ + 125 ℃
  • Length: 50 cm

MS01 sensor

  • Sensor Type: Soil Moisture Sensor
  • Humidity measurement range: 0 ~ 100% RH
  • Operating temperature range: 0 ℃ ~ 60 ° C
  • Cable length: 50 cm

RL560 sensor extension cable

  • Conductor resistance: max. 10Ω
  • Insulation resistance: min.5MΩ
  • Length: 5m cable length and max. Extendable length of 60 m.

In addition to the eWeLink app, SONOFF TH Elite fully supports the voice commands given via Alexa or Hey Google, IFTTT support and Home Assistant.

    SONOFF TH Elite can be used in various systems and work fields, wherever there is the need to monitor temperatures and / or humidity and, based on the detected parameters, turn on or off any electrical equipment. Supports LAN control. You can set 8 automatic control programs to save electricity consumption and create a comfortable environment.

      Simple to connect and intuitive, it has one of its strengths in its ease of use.

        In the upper part there is also an input for an RJ11 plug where the sensors that the user can choose according to his needs will be connected. On the front, in addition to the display, there are LEDs that indicate status and wifi connection as well as a button where you can manually act to enable or disable the relay inside the device.

          In the lower part of the SONOFF TH Elite we have two terminals for the power input (phase and neutral) and two terminals with the output power interrupted where to connect the load. in the upper part there is a small terminal block to connect equipment that needs a clean contact for their start-up (for example the boiler).

            It is always recommended to cut off the power before making connections.

              The coupling to the eWeLink app occurs as now in most of the new SONOFF products, ie via bluethoot.

                SONOFF TH Elite with its small size can be placed in any part of the environment where it has to perform its task and the possibility of hooking it to the din bar means that it can be placed inside an electrical panel.


                  SONOFF TH Elite represents once again the result obtained by SONOFF in wanting to provide users with a valid, precise and reliable product at an affordable price. And as always, it is also suitable for less experienced users. A versatile product suitable for the needs of those who must monitor temperatures and / or humidity and need to control equipment based on changes in the latter.

                    Thanks to SONOFF, each product allows you to domotize our life a little more!

                      The original text ( in Italian ) is here: