A sealed, waterproof DS18B20 digital temperature probe for precise measurements in wet or harsh environments. The sensor communicates over a 1-Wire interface, requiring just one data pin (plus ground) to connect to your microcontroller. It can even be parasitically powered from the data line.

Each DS18B20 has a unique silicon serial number, so multiple probes can share a single 1-Wire bus — ideal for multi-point temperature monitoring in HVAC systems, equipment, and process control.

Specifications

• Sensor – DS18B20 digital temperature sensor
• Input Voltage – 3.0–5.5V
• Temperature Range – -55°C to +125°C
• Accuracy – ±0.5°C (-10°C to +85°C)
• Resolution – Programmable 9 to 12 bits
• Interface – 1-Wire
• Probe Diameter – 7 mm
• Probe Length – ~26 mm
• Overall Length (with wire) – 6 ft (~1.8 m)
• Waterproof – Sealed stainless steel probe

Wiring

• Red – Vcc
• Black – GND
• White – Signal (Data)

Ideal For

• Liquid temperature monitoring (aquariums, brewing, hydroponics)
• HVAC and environmental controls
• Multi-point temperature sensing on a single bus

Package Contents

• 1× Waterproof DS18B20 Temperature Probe

Resources

• Datasheet (PDF)