Want to print at high temperatures than 300ºC and also have more accurate readings? Then the PT100 amplifier board is your answer, it will allow a sensing range up to and beyond 400ºC, the maximum safe temperature of an all metal hotend.
This board allows you to simply connect a PT100 temperature sensor to a standard analog input pin on a 3D Printer controller board. The board amplifies the signal from a PT100 sensor to a voltage level which can be easily ready by a 3D printer controller. To use the board simply select temperature sensor ’20’ in marlin firmware.