Cantherm is one of a number of suppliers that provides useful low-cost thermal switches, with one example being their F20A16005DCFB06E F20-series product. A question we see fairly often for products like this is whether they ship with calibration documentation from the supplier so customers can be assured of proper functionality. Is this the case?
Almost universally, no. “Calibration” refers to a product whose output, tolerances, or other critical performance factors can be tuned or adjusted after fabrication by users in the field. Most simple low-cost devices such as these thermal switches are unable to be altered after fabrication and fundamentally cannot be calibrated. A DMM can be calibrated; most fixed sensors cannot be. Products like this are instead generally issued with a Certificate of Conformance (CC, C of C, or COC are all known abbreviations), in which the manufacture states that the product will conform to its advertised specifications.