All ACW sensors in DIN format require an external 10-30 V power supply and an antenna to operate correctly.
The antenna is an essential part of the sensor to maximise the range and quality of the data transmission.
ACW/DIN sensors have an SMA connector that allows the connection of 868 MHz antennas. Many different connectors and adapters are available if the desired antenna does not have an SMA connector.
The advantage of connecting all types of antennas to ACW/DIN sensors is that they can be offset by a cable antenna: the antenna can then be positioned at a high point to maximise the quality of reception of the network signal.