Review on 🌡️ HiLetgo 5pcs DS18B20 Stainless Steel Waterproof Temperature Sensor Pack with 1M Probe by Kevin Abner

I bought these to bury our geothermal wells and hot springs. You can parallel them in large numbers for very easy wiring when using multiple sensors. Each has a unique serial number that allows them to "talk" to the microcontroller over the same line. And there are no additional analog sensor components to manage on long cables. I can have many of them in our deep well and the maximum temperature setting allows them to get a true picture of the temperature gradient in the hot well of a WWII tungsten ore refinery. I've been waiting a long time to get this through eBay - that's where I get them in a hurry.