The Ugreen Bluetooth 5.0 Audio Transmitter (transmitter & receiver) can both transmit and receive. It is ideal for connecting wireless headphones or speakers to devices that do not have an integrated Bluetooth connection. However, if you are looking for an adapter that is specifically suitable for communicating with a headset via a jack plug, you should make sure that the adapter supports the correct connections and profiles to ensure a stable connection.

2 can be connected see Ungreen 5.0 Audio Transmitter Manual