Shelly DS18B20 Digital Temperature Sensor with 3M Waterproof Probe
The Shelly DS18B20 Temperature Sensor is a waterproof digital temperature probe designed for precise environmental and liquid temperature monitoring in smart home automation systems. With a 3-metre cable and 1-Wire interface, this sensor connects to Shelly Plus Add-on devices to enable intelligent climate control, pool monitoring, aquarium management, and heating automation throughout your home or business.
Why You'll Love It
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Wide Temperature Range: Measures from -55°C to +125°C (-67°F to +257°F) for versatile indoor and outdoor applications
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High Accuracy: ±0.5°C accuracy from -10°C to +85°C for reliable temperature monitoring
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Waterproof Construction: Stainless steel housing with IP67 rating ideal for pools, aquariums, tanks, and humid environments
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Extended 3M Cable: Long cable length provides flexibility for remote sensing and hard-to-reach locations
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Easy Integration: Works with Shelly Plus Add-on and compatible with Shelly Plus 1, Shelly 1PM, and other Gen3/Gen4 devices
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Multi-Sensor Support: Connect up to 5 DS18B20 sensors on a single data bus for multi-zone monitoring
Perfect for Smart Home Automation
When paired with a Shelly Plus Add-on and Shelly relay devices, the DS18B20 sensor enables you to trigger intelligent automations based on real-time temperature data. Monitor and control heating systems, manage pool temperatures, track aquarium conditions, or automate climate control in greenhouses and commercial environments. The sensor provides stable, accurate readings and integrates seamlessly with the Shelly Smart Control app for remote monitoring and control from your smartphone.
Waterproof & Durable Design
Featuring a high-quality stainless steel probe housing (6mm × 50mm) and waterproof construction, this temperature sensor is built for both indoor and outdoor use. The robust design protects against moisture, humidity, and challenging environmental conditions, making it perfect for aquariums, pools, boilers, water tanks, outdoor weather monitoring, and industrial applications.
1-Wire Digital Interface
The DS18B20 uses a 1-Wire interface with a unique 64-bit address, allowing multiple sensors to operate on the same data bus without interference. This simplifies installation and enables comprehensive multi-zone temperature monitoring throughout your property. The sensor provides 9-bit to 12-bit digital temperature measurements with selectable resolution for precise control.
Key Applications
- Smart home climate control and heating automation
- Pool and spa temperature monitoring
- Aquarium environmental management
- Boiler and water tank temperature sensing
- Greenhouse and hydroponic systems
- HVAC environmental controls
- Industrial process monitoring
- Outdoor weather stations
What's in the Box
- 1 × Shelly DS18B20 Temperature Sensor with 3M cable
Full Specifications
| Sensor Type |
DS18B20 digital temperature sensor |
| Cable Length |
3 metres (9.84 ft) |
| Temperature Range |
-55°C to +125°C (-67°F to +257°F) |
| Accuracy |
±0.5°C from -10°C to +85°C |
| Resolution |
9 to 12-bit (selectable) |
| Interface |
1-Wire digital interface |
| Power Supply |
3.0V to 5.5V |
| Probe Housing |
Stainless steel, 6mm × 50mm |
| Waterproof Rating |
IP67 |
| Wiring |
3-wire: Red (VDD/Power), Yellow/White (Data), Black (GND) |
| Compatibility |
Shelly Plus Add-on, Shelly Plus 1, Shelly 1PM, and other Shelly Gen3/Gen4 devices |
| Unique ID |
64-bit unique serial address per sensor |
| Multi-Sensor Support |
Up to 5 sensors on one data bus |
| Warranty |
2 years manufacturer warranty |
Specifications are sourced from the manufacturer product page and may be updated.
