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DS18B20 specs: unique 1-wire interface requires only one port pin for communication
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Multidrop capability simplifies distributed temperature sensing applications
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Requires no external components
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Can be powered from data line, power supply range is 3.0 V to 5.5 V
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Zero standby power required
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Measures temperatures from -55°C to +125°C (Fahrenheit equivalent -67°F to +257°F)
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± 0.5°C accuracy from -10°C to +85°C
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Thermometer resolution is programmable from 9 to 12 bits
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Converts 12-bit temperature to digital word in 750 ms (max.)
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User-definable, non-volatile temperature alarm settings
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Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
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3-wire adaptor for Arduino included