This are 3 pieces Digital Temperature Sensor Shield with 1-Wire Interface for WEMOS D1 Mini applications to measure 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.

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 1-Wire interface.

- voltage supply 3.0 to 5.5V DC
- operating current ca. 1.5mA
- standby current ca. 3uA
- transmission current 1mA/4mA (logic 1/0)

For more information please refer to DS18B20 datasheet.