The DS18B20 temperature sensor from Dallas Semiconductor (Maxim) communicates via a 1-Wire interface, which requires only one pin for communication. Each sensor has a unique 64-bit serial code stored in its built-in ROM and requires no external components.
It can be powered through the data line and measures temperatures from -55 °C to 125 °C.
- Manufacturer: Dallas Semiconductor (Maxim)
- Communication interface: 1-Wire
- Number of communication pins: 1
- Serial code: Unique, 64-bit, stored in built-in ROM
- External components: Not required
- Power supply: Through the data line, 3–5.5 V
- Temperature measurement range: From -55 °C to 125 °C