The small enclosed wireless antenna of the wireless antenna modules and several wireless transmitter modules are replaceable by this larger 868MHz-HF-antenna to receive and transmit wireless signals to or from metal control cabinets. It is mounted on the magnetic base externally and the 250cm cable is routed inside the cabinet. The best performance is achieve by attaching the magnetic foot on a metal surface. The transmit and receive ranges are almost spherical around this antenna. Antenna height, only 10cm. With SMA screw terminal. Extension by 5m using wireless antenna extension FAV5 or by 10m using FAV10.