The ISM09 PT100 submodule is for Temperature measurement using a standard PT100 Temperature Sensor. A PT100 sensor is not included in ISM09, it should be obtained seperately. Note that ISM09 works only with IRIO02 (with 4 Analog Outputs as of October 2022). New production lots of IRIO01 shouuld also support ISM09. Please contact Cytech for more information.