Digital Temperature Sensor Module (DS18B20)

Overview

The DS18B20 is a high-precision digital temperature sensor that delivers accurate 9-bit to 12-bit temperature readings. It communicates over a 1-Wire bus, which simplifies wiring and allows multiple sensors to be connected to a single data line. Whether you're building a weather station, a greenhouse controller, or a home automation system, the DS18B20 offers reliable and consistent performance in a compact TO-92 package.

Key Features

• High Accuracy: ±0.5°C accuracy from -10°C to +85°C
• Wide Temperature Range: Measures from -55°C to +125°C
• 1-Wire Interface: Requires only one data line (plus ground) for communication
• Multiple Sensors on One Bus: Each sensor has a unique 64-bit serial code, so you can connect many sensors to a single microcontroller pin
• User-Selectable Resolution: 9-bit to 12-bit resolution for flexibility
• No External Components: Built-in pull-up resistor and power-on reset
• Parasitic Power Mode: Can be powered directly from the data line, reducing wiring

Technical Specifications

• Operating Voltage: 3.0V to 5.5V
• Temperature Range: -55°C to +125°C
• Accuracy: ±0.5°C (from -10°C to +85°C)
• Resolution: 9 to 12 bits (configurable)
• Interface: 1-Wire (single data line)
• Unique 64-bit Address: Enables multi-drop capability
• Conversion Time: 750ms maximum at 12-bit resolution
• Package: TO-92 (through-hole) or waterproof probe version available
• Output: Digital (1-Wire protocol)

Applications & Use Cases

• Environmental Monitoring: Weather stations, greenhouse controllers, and indoor climate sensors
• Home Automation: Smart thermostats, HVAC systems, and temperature-based triggers
• Industrial & Lab: Temperature logging, process control, and equipment monitoring
• DIY & Education: Microcontroller projects with Arduino, Raspberry Pi, ESP32, or STM32
• Aquarium & Agriculture: Water temperature monitoring and soil temperature sensing (with waterproof probe)

What's Included

• 1x DS18B20 Digital Temperature Sensor Module (TO-92 package)
• (Note: For waterproof version, a stainless steel probe with cable is included)

Compatibility

• Works with any microcontroller that supports 1-Wire protocol, including:
• Arduino (all boards)
• Raspberry Pi (using GPIO and 1-Wire overlay)
• ESP32 / ESP8266
• STM32, PIC, AVR, and more
• Compatible with popular libraries: OneWire, DallasTemperature (Arduino), and various Python libraries for Raspberry Pi

MOKWN Recommendation

For Egyptian makers, students, and engineers, the DS18B20 is an essential sensor for any temperature monitoring project. Its 1-Wire interface and multi-drop capability make it incredibly easy to expand your system without adding extra pins. Whether you're working on a university project, a smart home setup, or an industrial prototype, the DS18B20 provides the accuracy and reliability you need. Order now from MOKWN and get fast delivery across Egypt!