Abstract: A test stand sensor apparatus includes a sensor for acquiring data from the item under test and/or the environment, a power supply unit for converting electromagnetic radiation into electrical energy, and a unit for the wire-free transmission of sensor data and of a code which is characteristic of the sensor.

Abstract: A test stand sensor apparatus comprising a sensor 2 for acquiring data from the item under test and/or the environment is intended to permit relatively simple and relatively uncomplicated construction of the test stand together with the greatest possible degrees of operational reliability, failure reliability and functional reliability. To this end, the sensor apparatus has a power supply unit 4 for converting electromagnetic radiation into electrical energy, and a unit 4 for the wire-free transmission of the sensor data and of a code which is characteristic of the sensor. A test stand 1, preferably for prime movers, comprising at least one test cell with at least one sensor 2, 4 for acquiring data from the item under test and/or the environment, and at least one evaluation and/or memory unit 3 for the data, and if need be at least one preparation area for preparing the item under test and/or the at least one sensor, is equipped with at least one sensor apparatus 2, 4 of this kind.