Improved treatment apparatus (120, 152) is provided for the treatment (e.g., molding, heating and/or curing) of objects such as parts or part precursors (148, 170) including wireless detection of a temperature parameter related to the objects during treatment thereof. The objects include associated microwire-type sensors (150, 174) which have characteristic re-magnetization responses under the influence of applied, alternating magnetic fields. The apparatus (120, 152) have treatment chambers (122, 153) sized to hold the objects to be treated, with one or more antennas (132, 124, 166) proximal to such objects and operable to generate interrogating alternating magnetic fields and to detect the responses of the sensors (150, 174). The detected temperature parameter information is used by an apparatus controller (146) to maintain desired ambient conditions within the treatment chamber (122, 153).