Review on 🌡️ Waterproof Digital Thermal Probe 1M: ELENKER DS18B20 Temperature Sensor – Pack of 5pcs for Accurate Temperature Measurement by Doug Virden

Tried this set of 5 because of the price and found the quality surprisingly good. When I tested these 5 thermometers overnight, I found that they were all within a few tenths of a degree Fahrenheit of between 32 degrees Fahrenheit and 70 degrees Fahrenheit. Exactly for my needs and within the specified tolerance. Each of them had canned wire. The cable is flexible. The block looks like the picture. They work with 5VDC or 3.7VDC. I use these thermometers in Arduino IoT projects with Arduino series boards and Adafruit HUZZAH ESP8266 3.7V. Arduino has pinMode INPUT_PULLUP to pull up the data line. Other boards need a 4700K resistor (I use 4500K) to pull the data line up. I didn't use parasitic OneWire mode, I used three wires (VDC +, GROUND, DATA).