SONOFF Waterproof Temp Sensor for TH Series


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Power Applicability】The waterproof temperature sensor is available for SONOFF TH Elite/TH Origin to detect and measure the temperature.
Wider Measuring Range】Measuring range from -40℃ to +115℃ to enable use in a wider scope of applications. Easy to install.
Waterproof & Super-durability】The stainless steel probe is water-proof, corrosion-resistant and rust-proof which can  be used in a moist environment.
Enough Cable Length】The 150cm cable allows you to connect the device which is farther from the switch.
【Easy To Use】Just plug into TH Elite/TH Origin.

Note 1: RL560 is the new sensor extension cable of RJ9 jack, can extend sensor distance. THS01, WTS01, can be extended to 60M, and MS01 Soil Moisture Sensor can be extended to 10M.
Note 2: If you already have a 2.5mm Audio Jack sensor (AM2301/DS18B20) and want to use it for new TH Elite/TH Origin, you can buy a RJ9 adapter.

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Additional information

Weight 37 g
Dimensions 111 × 39 × 17 mm

Waterproof temperature sensor


Stainless steel temperature probe

WTS01 Working temperature


DS18B20 Temperature Measuring Range


Power Supply


WTS01 Length


Jack Type

RJ9 4P4C, 2.5mm Audio Jack

Customer Reviews

Based on 6 reviews
Plug and Play

I use the TH sensor to regulate our therapy pool and it works great, but the temperature sensor that came with the relay was way too short and it made the relay be too close to the water. This new temperature probe is much longer and now I can have the relay unit shielded on the other side of the wall away from the water. I unplugged the original and plugged in the new longer one and it has been working since with very accurate readings.

Lajos Vendel-Mohay

Fast shipping and super quality .. highly recommended


Fast shipping. Highly recommended!

Baggelis Kalamaras
Excellent product

Very good item. Fast shipping. Highly recommended!

Sonoff sensor

Fast shipping and super quality .. highly recommended 👍👍👍

Pearl Zhen
Sends temp. to my phone.

I’m using these in some custom house temperature sensors, both inside and outside. Three are used in my outdoor heated cat house, for our unfortunately outside cat. I measure air temp, the heated bed, and ambient cat house temp, and it just works. It’s been working for 9 months without issue.

SONOFF Waterproof Temp Sensor for TH Series