Datasheet

Sensor Terminal Blocks
If you have an RTD sensor, you need to connect it somehow! the terminal block area is where you can clamp down to
the sensor wires.
There are
four
contacts, but you can use 2, 3 or 4 wire sensors. You may need to solder or jumper some pads
depending on how many wires you want to use. You can also use a 3 or 4 wire sensor as a 3-wire or 2-wire sensor
(just don't connect the extra wires).
Check the RTD wiring page for details on how to connect the sensor you've got!
Configuration Jumpers
© Adafruit Industries https://learn.adafruit.com/adafruit-max31865-rtd-pt100-amplifier Page 7 of 31