Blueberry home solutions smart hub for raspberry pi blueberry ds18b20 bts 22mm the blueberry intelligent ds18b20 temperature sensor with 22mm pipe clamp assembly provides up to 12 bits of temperature measurement it can communicate with your raspberry pi arduino or other microcontroller using only 1 data line plus ground using a serial protocol the sensor has an operating temperature range of 55 to 125degc with an accuracy of plusmn05degc over the range 10 to 85degc being inte