1 Wire Temperature Sensor – DS18B20
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.
- 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
Raspberry Pi + DS18B20 : https://learn.adafruit.com/…temperature-sensing
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This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.
This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.
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