Review on 🌡️ Ultimate Performance: DS18B20 Waterproof Digital Thermal Temperature Sensor by Dean Love

They work fine but it would be MUCH better if the manufacturer engraved the sensor's serial number on the case. Sensors with a single wire are almost always used multiple times, in our application there are five sensors on one "wire". But the only way to find out which is is to run your software while holding ONE, read them all, and then see which one gets warmer. You can then look at what your software is reading to determine the serial number so you can then rewrite your software to determine which sensor is which. It would be SO EASY for the factory to just laser engrave the serial number on the sensor.