Description

The DS18B20 is a very popular temperature sensor due to its simple wiring, wide temperature range, and accuracy across a wide temperature range. The sensor uses a 1-wire digital protocol and features a unique 64-bit ID burned into each sensor a the factory, meaning multiple sensors can share one digital input pin on a microcontroller / single board computer.

The sensor is fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. This version is a bare sensor, and should not be directly exposed to the elements, but we do offer a weatherproof/waterproof version as well.

The sensor can operate on voltages between 3.0 and 5.5VDC and is compatible with 3.3 and 5V logic systems. A 4.7K pull-up resistor is required on the data line to keep the data transfer stable and is included with the sensor.

Features

• Usable temperature range: -55 to 125°C (-67°F to +257°F)
• Uses 1-Wire interface- requires only one digital pin for communication
• Multiple sensors can share one pin
• Temperature-limit alarm system
• ±0.5°C Accuracy from -10°C to +85°C
• Query time is less than 750ms
• 1 Wire Temperature Sensor
• 9 to 12 bit selectable resolution

Package Contents

• 1 x DS18B20 Temperature Sensor
• 1 x 4.7K Ohm Resistor

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