HiLetgo 10pcs 3D Printer 100K ohm NTC 3950 Thermistors Sensors with 1m Cable 3D Printers Parts for RepRap Mend Part Temperature Accessories

There are lots of online sites that provide code for using NTC thermistors like these to calculate temperature. The base resistance and "B" value that are required for this calculation -- 100 kOhm and 3950 -- are included in the description. For use with Arduinos, this one needs solid wires soldered to the end of the very fine stranded wires for use with a breadboard or headers. Can't be inserted in water, but the long leads mean you can use it in locations away from your breadboard. Overall, a good deal.

Thermisters are a pain in the butt.....but you have to have it!!!

Have only had to use one of the 10, but it's nice to have spares. Cable length is adequate as I used a crimped on jst connector in case replacing becomes a thing. From what I'm lead to believe these do require replacement from time to time.

The leads on these would seem to be long enough(1 m) but on a Creality 5 Plus they're not quite long enough. I made 1/4m extensions from the leads of the first failed thermistor using JST connectors bought here. Work fine. I've noticed that tolerances from piece to piece can lead to temperature readings that vary up to 5 degrees between pieces, use a thermometer to check accuracy and make note of needed offsets. These mostly fail when getting covered in molten plastic from a failed print and then when trying to clean the area off, one lead breaks off the bead. So mechanical failure rather than electrical. Unless that happens, they last for months in continuous use. But buy spares, crimpers and the JST connector kit. As a plus, these come pre-stripped for crimping. I usually have a couple already terminated for a quick swap.

What I found though is that the gauge of wire is really small compared to the stock Ender 3 Pro thermistor Sensor. So much so that I couldn't use wire strippers with it and had to use a sharp pocket knife instead. With that said I've found the sensor to work properly.

They are cheap and seem accurate enough for this application. Easy to install as they are plug and play which is nice as these things tend to stop working. My only complaint is they are pretty short and should be a bit longer for this application. But they work so not a huge deal.

3D printer temp sensors, they are what they say they are. Been using these on my Voron Trident and Mercury 1, with no issues or deviation from temps. They're cheap and work! Also quantity is good for having spares.

The original broke in half, I cut these short and connected them where the originals were with no issues. Have had no problems whatsoever since.