Siemens-SIMATIC-S7-200-EM-231-RTD-Temperature-Measuring-Module-Siemens-6ES7-231-7PB22-0XA0-An-RTD-temperature-measuring-module-designed-for-use-in-the-S7-200-family-of-PLCs-The-unit-accepts-the-most-popular-temperature-sensors-enabling-the-swift-&-accurate-capturing-of-temperature-data-Siemens-6ES7-231-7PB22-0XA0-EM-231-RTD-Temperature-Measuring-Module