DS18B20 Temperature Sensor Module provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of –55°C to +125°C and is accurate to ± 0.5°C over the range of –10°C to +85°C.
- Operating Voltage : 3.0 - 5 VDC
- Unique 1-Wire interface requires only one port pin for communication
- Measured temperature Range: –55°C to +125°C (–67°F to +257°F)
- Accuracy: ±0.5°C accuracy from –10°C to +85°C
- Size: 20mm x 21mm x 5mm
This video shows changing in temperature when the finger touched the sensor.