Buy a few, they are dirt cheap and they are consumables that are delicate. Good to have in your spares collection.
HT-NTC100K Thermistor Temperature Sensor L 1M For 350 Degrees 3D Printer Parts For Prusa i3 MK2S/MK3/MK3S Hotend Extruder
The improvements compared to the other thermistors on the market.
The temperature measurement range is increased from -50 ℃~ +250℃ to -50 ℃ ~ +350 ℃. It helps a lot to print high-temperature filament, can replace the original K-type thermocouple temperature.
HT-NTC100K thermistor with white high-temperature cable, can withstand higher temperature and flexure. Comes with Prusa MK specific connector. Plug and Play.
Can be used with the new version of the heater (the new heater can heat up to 350c degrees).
Total cable length:1M