Gravity Digital Temperature Sensor, DS18B20 - 

While there are many types of temperature sensors available in the market, the DS18B20 arduino Temperature Sensor form DALLAS is the best choice in applications which require high accuracy and high reliability. Its ultra-small size, low hardware overhead, strong anti-interference capability and high accuracy, together with other additional features makes DS18B20 even more popular among users. For electronic enthusiasts and hobbyists, the DS18B20 is a good start for learning and developing temperature-dependent prototypes.