Unable to establish a connections with home stero and car

This is how this device works: regarding its bluetooth part, this device is able to handle handsfree (HFP) and headset (HSP) profiles, which are meant to be used by previously paired bluetooth enabled phones, for phone calls purposes only, and Advanced Audio/Video Distribution (A2DP) and AudioVideo Remote Control (AVRCP) profiles, which are designed for stereo music, coming from previously paired compatible bluetooth sources, to be received and controlled (play/pause/prev/next). The only purely transmitter part of this device is its FM funcion, i.e. it receives A2DP streams from a bluetooth enabled device (e.g. computer, smartphone) and converts them to a predefined FM station, so that your car (or home stereo) can tune up and sound on their speakers.
Summarizing: the T505 bluetooth car kit receives phone calls and stereo music from bluetooth enabled sources and either sends them to its own loudspeaker, or converts them to a predefined FM station, to be tuned by another device.
If you happen to need its user guide, you can download it from here.
Please, let me know if I can help you any further.
Regards, Carlos