DS18B20 Waterproof Digital Temperature Sensor Probe — 1-Wire, Stainless Steel, Arduino

DS18B20 Waterproof Digital Temperature Sensor Probe — 1-Wire, Stainless Steel

The DS18B20 waterproof temperature probe uses the Dallas 1-Wire protocol to deliver accurate digital temperature readings from -55°C to 125°C with ±0.5°C accuracy. The stainless steel probe housing makes it suitable for liquid immersion, soil burial, and outdoor use where a bare sensor would be damaged. Multiple DS18B20 sensors can share a single data wire — each sensor has a unique 64-bit address, allowing up to 127 sensors on one Arduino pin.

Sensor Specifications

• Sensor IC: Dallas DS18B20
• Protocol: 1-Wire (single data wire + power + ground)
• Temperature Range: -55°C to +125°C
• Accuracy: ±0.5°C (from -10°C to +85°C)
• Resolution: 9–12-bit (configurable, 0.0625°C at 12-bit)
• Supply Voltage: 3.0V – 5.5V
• Probe Housing: Stainless steel — waterproof and corrosion-resistant
• Cable Length: ~1m (3-wire: red=VCC, black=GND, yellow=Data)
• Unique ID: 64-bit ROM code — multiple sensors on one wire

Arduino Wiring

• Red → 5V | Black → GND | Yellow → Arduino digital pin (e.g., D2)
• Add 4.7kΩ pull-up resistor between Data and VCC
• Use OneWire + DallasTemperature libraries from Arduino Library Manager

Multiple Sensors on One Wire

• Connect multiple probes to the same data pin (all share one 4.7kΩ pull-up)
• Each sensor has a unique 64-bit address — read individually in software
• Up to 127 sensors on a single Arduino digital pin

Typical Applications

• Aquarium temperature monitoring
• Pool and spa temperature control
• Soil temperature for greenhouse automation
• Pipe and liquid temperature monitoring
• Outdoor weather station temperature probe
• Sous vide and fermentation temperature control

DS18B20 stainless steel waterproof probe — 1-Wire, ±0.5°C accuracy, -55°C to 125°C, multiple sensors on one wire for Arduino liquid and soil temperature monitoring.

Enjoy free standard shipping on all orders over $199 USD. Orders are processed within 1–2 business days.

Not satisfied? Return any item within 90 days of purchase for a full refund or exchange. Items must be in original condition.

We are committed to quality, reliability, and customer satisfaction. Every product is carefully selected and tested to meet the highest standards.