Shelly DS18B20 Waterproof Digital Temperature Sensor with 1m Cable
The Shelly DS18B20 Temperature Sensor is a waterproof digital temperature probe designed for precise environmental and liquid temperature monitoring in smart home and automation applications. With a wide measurement range from -55°C to +125°C and high accuracy of ±0.5°C, this sensor is ideal for monitoring aquariums, pools, boilers, water tanks, HVAC systems, and outdoor environments. Featuring a 1-metre cable and stainless steel waterproof housing (IP68), it connects easily to Shelly Plus Add-on devices for intelligent climate control and automation.
Key Features
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Waterproof & Durable: IP68-rated stainless steel housing protects against moisture and corrosion for indoor and outdoor use
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Wide Temperature Range: Measures from -55°C to +125°C (-67°F to 257°F) for versatile applications
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High Accuracy: ±0.5°C precision in the range of -10°C to +85°C ensures reliable readings
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1-Wire Digital Interface: Simple 3-wire connection (VCC, DATA, GND) with unique 64-bit address for multi-sensor setups
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Parasitic Power Mode: Can draw power directly from the data line, eliminating the need for external power supply
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Flexible Installation: 1-metre cable allows convenient sensor placement away from the controller
Perfect for Smart Home Automation
When paired with the Shelly Plus Add-on and compatible Shelly devices (such as Shelly 1, Shelly 1PM, or Shelly Plus devices), this sensor enables advanced temperature-based automation. Trigger heating, cooling, or notifications based on real-time temperature data. The 1-Wire bus interface allows you to connect up to 5 DS18B20 sensors on the same data bus, making it perfect for multi-zone temperature monitoring throughout your home, office, or industrial facility.
Versatile Applications
The Shelly DS18B20 is suitable for a wide range of monitoring tasks:
- Pool and aquarium temperature monitoring
- Water tank, boiler, and heating system control
- Soil and greenhouse temperature tracking for gardens
- HVAC environmental controls in commercial buildings
- Refrigeration and cold storage monitoring
- Outdoor weather station integration
Easy Integration & Compatibility
The sensor uses the industry-standard DS18B20 digital thermometer with configurable resolution (9 to 12 bits). It communicates seamlessly via the 1-Wire protocol and is compatible with Shelly Plus Add-on, Shelly Uni, and other smart home systems. The sensor's compact design (6mm diameter) and flexible cable make installation simple, even in tight or hard-to-reach spaces.
What's in the Box
- 1 × Shelly Temperature Sensor DS18B20 with 1m cable
Full Specifications
Physical
| Cable Length |
1 metre (3 feet) |
| Dimensions |
6 x 6 x 1000mm |
| Weight |
20g (0.71 oz) |
| Housing Material |
Stainless steel (waterproof) |
| Cable Material |
Polyvinyl Chloride (PVC) |
| Cable Colour |
Black |
| Ingress Protection |
IP68 |
Temperature Sensor
| Sensor Type |
DS18B20 digital thermometer |
| Measuring Range |
-55°C to +125°C (-67°F to 257°F) |
| Accuracy |
±0.5°C (in range -10°C to +85°C) |
| Resolution |
9 to 12 bits (configurable) |
| Conversion Time |
< 750 ms |
| Interface |
1-Wire bus (3-wire: VCC, DATA, GND) |
| Unique Address |
64-bit serial code |
Electrical
| Power Supply |
3.0 to 5.5 V |
| Power Consumption |
≤ 0.1 W |
| Current Consumption |
1 mA |
| Parasitic Power |
Yes (can operate from data line) |
Environmental
| Ambient Working Temperature |
-55°C to +125°C (-67°F to 257°F) |
| Humidity |
30% to 70% RH |
Compatibility
| Compatible Devices |
Shelly Plus Add-on, Shelly Uni, Shelly 1, Shelly 1PM, The Pill by Shelly |
| Multi-Sensor Support |
Up to 5 DS18B20 sensors on one data bus |
| Protocol |
1-Wire digital interface |
Warranty
| Warranty Period |
2 years (standard Shelly accessories warranty) |
Specifications are sourced from the manufacturer product page and may be updated.
