The DS18B20 Temperature Sensor is the go-to choice for anyone who needs to take accurate temperature readings in environments where a standard sensor just wouldn’t survive. Whether you are monitoring the heat in a water tank, tracking soil moisture for a smart garden, or building a home brewing system, this waterproof probe is built to handle the elements.

What makes this sensor special is its “1-Wire” digital design. Unlike old-school analog sensors that can be affected by interference, the DS18B20 sends a clean digital signal, ensuring your readings stay precise even over its full 1-meter cable length. It’s housed in a rugged stainless steel cap that’s both rust-proof and moisture-resistant, making it a “set it and forget it” solution for your next project.

Why This Sensor is Essential

• Tough and Waterproof: The stainless steel housing is sealed to protect the internal chip, allowing you to submerge it in liquids or bury it in damp soil without worry.

• Simple Wiring: Using the unique 1-Wire interface, you can connect multiple sensors to a single digital pin on your Arduino or Raspberry Pi.

• No Calibrating Needed: It’s digital and pre-calibrated at the factory, so you get accurate data the moment you plug it in.

• Wide Range: Reliable performance from extreme cold to high heat, covering almost any DIY or industrial application.

• Versatile Power: It can actually draw power directly from the data line, which simplifies your wiring and keeps your project tidy.

Technical Specifications

• Voltage Support: 3.0V to 5.5V

• Temperature Range: -55°C to +125°C

• High Accuracy: $\pm 0.5°C$ within the most common usage ranges.

• Output Leads: Red (Power), Black (Ground), Yellow/White (Data)

• Probe Tip: 6mm diameter stainless steel

• Cable Length: 1 Meter (approx. 3.2 feet)