Sonoff DS18B20 RJ9 4P4C – waterproof temperature sensor – 1 m THR316
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Sonoff DS18B20 waterproof temperature sensor 1m RJ9 4P4C THR316 THR320
High-quality waterproof temperature sensor dedicated to Sonoff Elite series smart relays. Equipped with a precise DS18B20 digital sensor and a cable with a length of 1 meter, terminated with an RJ9 (4P4C) plug. Ideal for measuring temperature in liquids, aquariums, cold storage, or outdoors.
Key features:
- Dedicated for devices Sonoff THR316, THR320, THR316D, THR320D
- Original connector RJ9 4P4C – Plug & Play installation
- Cable length 1 meter
- Waterproof stainless steel probe – corrosion and moisture resistance
- Wide measuring range from -20°C to +85°C
- Digital sensor DS18B20 – high measurement precision
- 1-wire communication – stable data transmission
Waterproof measuring probe
Probe made of high-quality stainless steel, ensuring resistance to moisture and rust. It works perfectly in harsh environmental conditions.

Dedicated RJ9 4P4C connector
The sensor is equipped with a factory RJ9 (4P4C) connector, which guarantees full compatibility and immediate operation with Sonoff TH Elite and TH Origin series relays without the need for adapters.

Technical specification:
- Sensor type: Digital DS18B20
- Measurement range: -40°C ~ +100°C
- Connector: RJ9 4P4C (Dedicated for Sonoff)
- Interface: 1-wire
- Cable length: 100 cm
- Probe: Waterproof, stainless steel
- Compatibility: THR316, THR320, THR316D, THR320D
- Extendable: Yes (e.g., ALC560 adapter)
Set contents
- DS18B20 temperature sensor with 4P4C connector 1m ×1




