DS18B20 Waterproof Digital Temperature Sensor
The DS18B20 is a precision digital temperature sensor designed for Arduino, Raspberry Pi, and IoT applications. Housed in a waterproof stainless steel probe, this sensor delivers accurate temperature measurements from -55°C to +125°C, making it suitable for indoor and outdoor monitoring projects.
Technical Specifications
- Temperature Range: -55°C to +125°C measurement capability
- Accuracy: ±0.5°C precision between -10°C and 85°C
- Operating Voltage: 3.0V to 5.5V power supply
- Communication Protocol: 1-Wire digital interface for simplified wiring
- Probe Construction: Waterproof stainless steel housing (6mm x 50mm)
- Cable Options: Available in 1 meter, 3 meter, or 5 meter lengths
Wire Configuration
- Red Wire (VDD): 5V power supply connection
- Yellow Wire (DATA): Data transmission line
- Black Wire (GND): Ground connection
Important: A 4.7K pull-up resistor is required between VCC and the Data pin for proper operation. Parasite power mode is not supported with this module configuration.
Applications
This digital temperature sensor is ideal for home automation systems, weather stations, greenhouse monitoring, aquarium temperature control, HVAC diagnostics, industrial process monitoring, and Arduino-based science projects. The waterproof stainless steel construction allows for direct immersion in liquids or outdoor installations.
Getting Started
To use this sensor with Arduino, you’ll need:
1. Dallas Temperature Control Arduino library
Tutorial for DS18B20 Sensor with Arduino
The 1-Wire communication protocol allows multiple DS18B20 sensors to be connected on the same data line, enabling cost-effective multi-point temperature monitoring with minimal wiring complexity.
