This Eartec PRO2000 COMSTAR wireless base station offers full - duplex functionality. Note that it does not come with a power supply. Instead, it includes a battery for power needs.

To use this Eartec PRO2000 COMSTAR wireless base station, first make sure the battery is properly installed. Then, connect it to your relevant devices according to the device's connection instructions. Remember, since it doesn't have a power supply, keep an eye on the battery level. If the battery runs out, replace it with a new one. For maintenance, keep the base station in a dry and clean place. Wipe it gently with a soft cloth if it gets dirty. Avoid exposing it to extreme temperatures and direct sunlight, as this may damage the internal components.