The Tentaclion system is an intelligent quick measuring system which permits the connection of all current sensors and offers signal ranges up to 20 kHz per channel. The system can be connected by ethernet interface directly to every notebook. A WLAN interface also permits wireless transmission of the measuring data either over up to 300 m directly to a notebook equipped with WLAN option or over up to 3 km of free _ eld to a transceiver which transfers the data via ethernet interface to the PC.