E3D Genuine PT100 Temperature Sensor (E-PT100-100-MOLEX)

Just what i needed for my ultimaker 2.Works great.

Be SUPER careful with the wires and make SURE your wiring CANNOT snag ANYWHERE.Seriously.. I've ruined 2 of these by the wire pulling a TINY bit at the end of the X-Axis travel and it either rips the wires right out, or breaks them internally. They are SUPER fragile and at $20 a piece... That's not cheap.Something I did learn though, if you're willing to put forth the effort. If you search Amazon you can find a 10 pack of PT100 sensors with metal casing and thin white wires. The metal case is too large to fit into the E3D Hotend, but if you're careful with a dremel/wire cutters you can cut off the metal casing and there is a PT100 sensor inside that's shaped just like a regular resistor (It's a thin film PT100). Then you just need to find a copper/brass casing that you can slide it into and solder the wires onto it. I used some thermal epoxy to hold it.Overall the above solution is a lot cheaper (10 for $10, vs 1 for $20) with a small investment for the thermal epoxy and small copper tubing/casing.

it ran fine on duet wifi board but i could watch the temp fluctuate on the control screen, tapping the wire would make it go up and down. Eventually i ended up un-plugging and plugging the sensor back in and it would read fine. worked fine for small prints. The constant movement would make such a huge temp difference after awhile that the print would fail or look ugly. do not use a pt-100 sensor with a plug, resistance will not stay constant.

Replaced a Ultimaker 2 temp probe that broke. Arrived fast and at a good price. Would buy again, but hopefully I won't break the new probe.

Had to end up buying more than one, the wires are very weak at the thermistor end