The present invention refers to a device (1) for arrangement underneath one or multiple layers (2, 4, 6) of material. Said device comprises at leasta detection unit (8) for detecting of at least one parameter of the material,a communication unit (10) for transmitting data representing the detected parameter through the one or multiple layers (2, 4, 6) of material,wherein the communication unit (10) comprises a RF circuit (12) and an antenna (14),an envelope element (16) for surrounding of at least the communication unit (10),wherein the envelope unit (16) comprises a material composition, wherein the material composition at least comprises a polymer material, a ceramic material and cellulose.
