Wireless Window Sentinel (IMAGE) Fraunhofer-Gesellschaft Caption The sensor nodes embedded in the window frame transmit the data via the s-net wireless sensor. The prototype of the RF node (left) pictured here will be installed in the sensor housing (right) of the finished system. Credit © Fraunhofer IIS Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.