The CS241DM is a surface-mountable, back-of-module temperature sensor with features designed for bifacial photovoltaic (PV) module performance assessment and soiling. The probe head has been redesigned for easier installation. The measurement performance has been improved with a smaller footprint that is optimized to reduce back-of-module shading and eliminate surface cooling. Other improvements include greater sensor-to-module bonding/adhesion and a thinner Teflon cable with a higher temperature rating. To meet the requirements of performance validation, every CS241DM is supplied with a NIST-traceable, serialized calibration certificate.  This best-in-class smart sensor is a digital Modbus version of the CS241 PT-1000 Class A, Back-of-Module Temperature Sensor.