Sonoff DS18B20 waterproof temperature sensor

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Outdoor-indoor waterproof temperature sensor compatible with Sonoff TH10 and TH16.

SKU: SON-KIE-DS1 Category:


Sonoff DS18B20 is a waterproof temperature sensor, compatible with Sonoff TH10 and TH16 smart relay switches. Due to its waterproof design it reliably operates in wet conditions, e.g. in water tanks, aquariums, cooling-rooms, pools etc. Sensor made of stainless steel, long-term durability, extra sensitivity to all temp-changes.

Temperature range from -55℃ to 125℃, remains reliable in extreme high and low temp conditions.

Cost efficient solution to integrate with Sonoff smart relays, and trigger temperature based automated turn ON / OFF. The sensor has a 2.5 mm 4-pin (stereo audio-like) connector, fits to Sonoff TH10 / TH16 relays’ sockets.

The sensor should be plugged into the smart switch before power-on. It is not advised to plug or unplug the sensor after power-on.

With the help of eWeLink app you can create any temp-based settings that trigger automated turn ON / OFF of TH10 and TH16 relays, or other connected relays like a S20 smart socket. A perfect choice to control ventillators, electric heaters, radiators, humidifiers, dehumidifiers, air conditioners, sprinklers, aquariums.

Total length of Sonoff DS18B20 temperature sensor (from the connector to the sensor’s edge): approx. 100 cm.

Sonoff DS18B20 waterproof temperature sensor is recommended to the following products:

  • Sonoff TH10 WiFi-equipped, smart switch relay remotely controllable via Internet, the lower output version (2200W, 10A),
  • Sonoff TH16 WiFi-equipped, smart switch relay remotely controllable via Internet, with higher output than TH10 (3500W, 15A).

Additional information

Weight 0.026 kg
Dimensions 95 cm
Product type

temperature sensor

Brand / Manufacturer


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