100% Brand New Manufacturer:Dallas Semiconductor(Maxim) Manufacturer P/N: DS18B20 Unique 1-Wire interface requires only one port pin for communication Each device has a unique 64-bit serial code stored in an on-board ROM Requires NO external components Can be powered from data line from 3V to 5.5V Measures temperatures from -55°C to +125°C Package: TO-92 QTY: 10PCS