WWZMDiB 5 Pcs DS18B20 Temperature Sensor Probe High-Accuracy Waterproof Equipped with 5 Pcs 4.7K resistors for Arduino Raspberry Pi DIY

Used for my arduino project that needed multiple temperature dataWorked perfectly for my application. Would recommend product.

Overall, this is a good product and I would purchase again. So here's the full story. I'm using 3 of these in 1 Arduino project as a replacement for my original DHT22's. Making this change required adding a 4.7K pull-up resister to the circuit board. In addition, the DS18B20 required that I change temp sensor libraries. The DS18B220 requires that you use the DallasTemperature library, but that's readily available so o no problem there either.Be aware that the resisters shipped with this product are 47K. resisters. But the DS18B20 requires a 4.7K resister. Duh, stupid me. I blindly use the resisters that shipped with it and had problems. Once I replaced them with the proper 4.7K resister, the problems went away.The Good:1) Running 3 sensors, all next to each other, are at most 0.75 of a degree F of each other. That's within the stated spec. But they usually do better that with the norm being only 0.25 of a degree variation.2) I like the ling WATER PROOD cable. Ideal for outdoor use.3) Excellent temperature range. Way better than even the DHT22.The Bad:1) They're sloooow. To read 3 temp sensors in one pass on different channels can take up to 2 seconds. DHT22's are much faster.2) You may need to modify your circuit board to add the 4.7k resister that the DHT22 does not need.3) The special device library is not compatible with the more standard DHT sensor library, so you will need to code accordingly.Overall, this sensor works good and has it's place.

Working on a esp32 project using two of these and they seem to be very accurate. Tested them at 32 F (0 C) and they were only .2 high which easily could have been my test setup. Have not tested at high temp but there isn't any reason to doubt they wouldn't be accurate there.

They sensors themselves work well. However, they did not come with 4.7k resistors as described; they came with 5.7 ohm resistors. Fortunately, I had some 4.7k and was able to get them working, but be cautious and check them before using.

No surprises, exactly as advertised. Have been using these for months now in a temperature monitoring app.

Works well with arduino if you know how that stuff works. Easy to read annalog signal.

The temp sensors seem fine and read accurately. However, the listing says they include 4.7K resistors but the pack I received had 4.7 ohms resistors. That led to several hours of frustration and time wasted to try and get them working with the wrong resistor.

Product arrived quickly and work as intended.