Sonoff TH16 WiFi smart relay switch with sensor support

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WiFi-equipped, remotely controllable via Internet and smartphone, high performance, with timer function, operates with 3500W (16A) peak output.

SKU: SON-REL-TH16 Category:
EAN: 6920075700954


Sonoff TH16 is a smart switch relay, bigbrother ot TH10, high performance timer-function version of Sonoff via Internet controllable product line. WiFi-equipped smart relay, that after wired to an electric cable you can close or break the circuit with thus turning ON / OFF the device connected to the same electric cabel. The smart relay is remotely controllable via Internet and iOS (Apple) or Android smartphone App, and you can set scheduled turning ON / OFF. The device has physical buttons. Share remote control in the App with your family. Ideal solution to smart control home appliances, that don’t need to operate all the time and can be turned ON / OFF periodically (e.g. aquarium air pump). By using the smart switch relay you can remotely turn ON any of your appliances even before you are at home and you can conveniently set a scheduled turn OFF to save energy and cost.

Sonoff TH16 can be paired with SI7021 temperature and humidity sensor or a DS18B20 waterproof thermometer (sold separately, not included in TH16 kit), and an automated turn ON / OFF of the relay (or other Sonoff relays) can be triggered based on a preset temperature or humidity range.

Product features:

  • Remote ON / OFF – Anytime, anywhere, from now on you can turn all your appliances on and off remotely.
  • Real-time display of temperature and humidity data, automated control based on – when pairing with SI7021 temperature and humidity sensor (sold separately)
  • Real-time display of temperature data, automated control based on – when pairing with DS18B20 waterproof thermometer (sold separately)
  • Mobil App – free iOS és Android mobil App: eWeLink
  • Sync status – Check actual relay status (turned ON or OFF) with the mobile App
  • Timer – Various timer functions: single time, scheduled turn on/off, countdown/timer, loop.
  • Share control – Control the device together with your family
  • Scene – Turn ON / OFF a gang of devices with one tap
  • Smart scene – Triggered ON/OFF by temp, hum or other environmental sensors
  • Compatibility – Works perfectly with Amazon Alexa, Google Assistant, IFTTT and Google Nest

Additional information

Weight 0.085 kg
Dimensions 11.4 × 5.1 × 3.2 cm
Product type

smart relay



Number of electric gangs controlled


Momentary switch (Inching)


Physical switch


DIN rail compatible

yes, with Sonoff DR adapter (not included)



433MHz RF remote controllable


Remotely controllable via internet


Voice control

Amazon Alexa and Google Assistant compatible

Power meter


Schedulers, timers

yes (single, schedule, timer/countdown, loop)

Smartphone app

yes, free app: eWeLink (Android, iOS)


Amazon Echo, Echo Dot, Amazon Tap, Google Home, Google Nest, IFTTT


90-250V AC, compatible with Hungarian 230V

Maximum power output

3500W (16A)

WiFi wireless standard

802.11 b/g/n (2.4GHz)

WiFi security mechanism


Operating temperature range

0-40 ℃

Supported humidity range


Brand / Manufacturer



CE and RoHS certificates:



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