This is a addon to the interlock kit.
With this parts you can sensor the mirrors in your machine and the Interlock will warn you when the temperature of the mirrors get to high and needs cleaning.
This addon contains
4 temperature sensors (1 spare) soldered to wire and connector
You need a PC to re-program the Interlock and edit code to make this work properly.
Connect theese sensors to connector M1, M2 and M3 on the interlock and connect the arduino to a PC. Change rows 117-119 and remove the # in front of the row, this activates the sensors.