DS18B20 IP67 Thermal Probe with 3.5mm Audio Jack

The probe operates from 3.0V to 5.5V DC, making it compatible with both 3.3V and 5V microcontroller systems like Arduino and Raspberry Pi. Ensure your power source is within this range for accurate readings and to prevent damage to the sensor.

The 3.5mm audio jack carries the 1-Wire signal and power lines. You will need a matching 3.5mm plug breakout board or cable to separate the connections (VCC, GND, Data) for wiring to your microcontroller. The 1-Wire protocol requires a single data pin and a pull-up resistor (typically 4.7kΩ) to VCC.

Yes, the stainless steel sheath is rated IP67, meaning it is dust-tight and can withstand temporary immersion in water up to 1 meter for 30 minutes. It is ideal for measuring liquid temperatures in tanks, pipes, or outdoor environments. Ensure the cable entry point at the jack is also protected from moisture.

The DS18B20 sensor provides ±0.5°C accuracy within the -10°C to +85°C range. Its full operational range is -55°C to +125°C, though accuracy may decrease at the extreme ends. The digital output provides 9 to 12-bit configurable resolution.

Yes, the 1-Wire protocol supports a multi-drop bus architecture. You can connect many DS18B20 probes to a single data line, as each sensor has a unique 64-bit serial code. Your code must handle address discovery and sequential communication with each device on the bus.