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. 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.