Tegg 5PCS NTC 3950 100K Thermistors Temp Sensor with 1M Wiring and 2Pin Connector for RepRap 3D Printer Heatbed Hot End Mendel Prusa J-Head

These work as they should on and Ender 3 Pro. Everything is as advertised, and they look and feel like quality parts. Will grab another pack just to have them.You'll either need to splice these leads into the existing JST connectors as they have standard 2.54mm dupont style connectors on these from the factory, or better yet spend the $8-$10 on a 50 pack of the 2.54mm deal here on Amazon that gets you 50 female 2-position JST connectors with ~6" wire leads and 50 bare male connectors. If you're going to be modding your Ender 3 Pro like basically everyone does nowadays, having the JST around connectors is incredibly convenient.

best accuracy so far, used a micro controller along with 5 100k resistors to guard temp readings on my bldc motor drivers. already saved me a few hundred bucks from overheating

This worked as a replacement on my Prusa i3 MK3S. Unfortunately, I've noticed that sometimes it will just decide to start reading random temperatures. Watching the display on the printer the bed will jump from the set value of 65º up to 74º and then immediately down to 58º. I initially suspected the wire was bad, but after the printer completed the print and it was cooling down, the machine was stationary, and the temperatures were still swinging wildly. This hasn't tripped and errors while printing yet, but with the temperature all over the place there's no telling what the actual bed temperature is without using a thermal camera. Also, if the sensor decides to read 10º over actual for any extended period of time the bed will cool off and cause a print to detach.

The wire is longer than convenient, but it works.

Advertised as being compatible with the Ender 3 v2, the wire itself is far too short and it doesn't have the proper connector for the motherboard on this printer.