This Digital Temperature Sensor with the simple 1Wire Interface measures temperatures between 55 and +125 degrees Celsius.

Libraries for this sensor type and different programming environments for example for Arduino or Raspberry are available and easy to find.

The sensor element is conditionally watertight. Use it under wet conditions at your own risk.

A temperature alarm condition can be programmed right in the sensor (nonvolatile).

Every sensor element comes with a unique digital serial number. Therefore multiple sensors can be connected to the same 1Wire interface.

overall length is 100cm
probe size is about 50 x 6mm
voltage supply 3.0 to 5.5V DC
operating current ca. 1.5mA
standby current ca. 3A
transmission current 1mA/4mA (logic 1/0)

Please refer to the DS18B20 data sheet for more information.
Comprehensive information about how to use DS18B20 with Arduino.