Eiechip® 5PCS Waterproof Temperature Probe Thermometer DS18B20 1M with Heat Resistance Thermal Cable

Hi, I purchased 5 for my Arduino Mega (and ESP8266 NodeMCU 12-E). I did not realize how much i would like the "one-wire" communication protocol, until I purchased these thermistors which are individually 8-bit addressable and are water resistant (proof?) submersable temperature probes... on 3 foot leashes/cords. I tested them all to figure out which ones were in most agreement on temperature. I plunged them into an ice bath, into boiling water, into my coffee cup with cream, and recorded the temperatures in Fahrenheit and found 3 of them were very close in readings, the other 2 were running a degree over and under the average of all 5. Very reliable and responsive compared to other temperature sensors I have tried... with good specs (see data sheet). They were outdoors working just fine this week... reporting the temperatures in the chicken coop and outside when temperatures dropped below zero.Other models and brand sensors (i was also testing, for fun) stopped reporting cold temps at around 32F/0C... These DS18B20 sensors kept going beyond the limits of lesser probes.

Tested two point calibration at 212 and 32 degf , only needed a .3 degf offset ( I was probably being too much of a stickler)Really pleased with how these work.

I bought these for ambient temperature sensing, and they work consistently and well.I write this review to disclose the following: The factory heatshrink tubing is just for show. It isn't adhesive-lined and thus offers very little in terms of weather protection.But the guts of the thing are well-potted inside of a stainless steel tube, so it shouldn't matter for many applications.For my outdoor application, I've stripped off the factory heatshrink and installed my own that is adhesive-lined. It makes me happy to do this, but again it probably isn't normally necessary.

Worked out of the box with my Raspberry Pi and the Raspbian w1 driver.Only problem I had is on several of them the inner insulation was nicked where the outer jacket was cut at the factory and caused the conductors to break after getting shuffled around on the bench, i had to trim the cable back and re-terminate them.

Bought them to work with Shelly temperature add on for my Shelly 1 relays. They work great but I wish they had longer leads.

These are working great with my ESP8266. Simple one wire interface. For testing purposes I am temporarily watching temps on my fridge and freezer and so far everything looks good.

Terrible. Not properly shielded

Great Price, Item as describe! Would buy from this seller again!