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1 wire DS18B20 Temperature Sensor

1.Unique 1 Wire interface requires only one port pin for communcation. Multidrop capability simplifies distrbuted temperature sensing applications.Requires no extenal components 2.Operating temperature range:-55℃ to +125℃, ±0.5℃ accuracy from -10℃ to +85℃ 3. Can be powered from data line. Power supply range is 3.0V to 5.5V 4.Thermometer resolution is programmable from 9 to 12 bits.
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3.5mm Audio Plug DS18B20 Sensor

DS18b20 is a device communications bus system designed by Dallas Semiconductor Corp that provides low-speed(16.3kbps【1】) data,signaling,and power over a single conductor. This DS18B20 sensor product is produced with a dual headphone adapter,also know as a headphone splitter or audio jack splitter.